The police keep the originals? That's sick!
Anyway to circumvent that (aside from mailing)?
Yes. Unfortunately as some have stated that they do an investigation even if the cause of death is clear. My BF left a will (of sorts), a general note explaining everything, and a personal note for me. That note to me means more than I can ever describe... The police took all of those, recorded our last texts to each other (him telling me he had a gun and wanted it to end), my frantic pleas for him to let me come get him, the phone call log of my 18+ phone calls to him when I was trying to find him...everything.
In fact even though he has been gone for a few weeks now we still don't have his death certificate because toxicology takes so long so the "investigation" isn't technically over yet.
As others said I think the best method I think is to leave copies of your notes with you so when you are found the police can have them for their investigation and to mail your originals to your loved ones.
Another thing I ask that you consider doing is: get all photos and videos that you have of yourself that your friends or family may not have and compile them all in once place, a google drive account, a thumbdrive, something. Your friends and/or family
will want to look at them. I've spent many nights just looking through mine. My BF did not take many photos of himself but I took a lot of him (he was absolutely adorable so how could I not?) and his family did not have any of him recently. I spent a lot of time making sure to get the best ones of him together and those his friends have for his family. That was an incredibly hard process...but it was worth it to give that for his family and friends.
Here's an odd suggestion: Wear a t-shirt, sweatshirt, or some type of clothing like that that you normally wear for a day or two. If you wore a specific deodorant or cologne/perfume lightly wear that with the clothing and place them in an airtight bag (like a spacebag). Why? Because it will have your scent on it. It may sound weird but scent is a powerful reminder. I promise you your parents will want it. Dylan's parents did, and I have a hoody he wore the day before. When someone you love is gone anything to remember them by is treasured.
@Frank, I know you said your handwriting is terrible (mines not particularly good either) but in that case I might suggest you type up your note on one or two pages and then handwrite the same thing in case they cant read it. It's just a lot more personal and I think means a lot more to hand write it. Just my suggestion.
Generic advice for anyone on settling your affairs:
Disposition of remains: If you wish your remains to be taken care of in a significant way (cremated, burial funeral, etc) then make sure you write that in a will or last statement. If you wish for certain individuals to have some of your things (certain clothes, tools, games, etc) then again make sure it is in a will or statement because without that then it's up to the next-of-kin who may not know your wishes or may decide to take another course of action. I was extremely lucky that my boyfriends parents knew how much we loved each other and let me be a part of the process for handling his remains and they let me keep anything of his that I wanted (you would be surprised how significant a particular t shirt can be when remembering someone you love).
Do I need a will? Make sure if you have assets in excess of $30,000 (if you are in the US) you put them in a will, if you have life insurance, IRA accounts, etc that you designate a beneficiary. It depends by state (in the US) but if you have assets greater that $30,000 but not a will then your assets go to probate where any outstanding debt takes priority, everything is subject to court costs and lawyer fees, and your family has to go through some frustrating and complicated hurdles to get anything of value and/or settle your debts.
There are generic will's you can buy at some office supply stores, there are some online services that cost a small fee ($35 or so) if you want to make sure you do it right.
Pets: If you have a pet it is considered property in the eyes of the law so you need to designate a caretaker for your pet(s) and can also allocate some funds from your estate for its care.
Life insurance: If you have a policy ensure that it is two years old before CTB as most states (with the exception of one or two) require the policy to be two years or older to pay out in an instance of suicide. I would also look at your particular policy to see if there are any other exceptions.
Financial accounts (credit card, banking, loans, retirement, medical savings etc) I would write down the account numbers, it's expected asset value (or debt), and your log in information if there is any. Your family or loved ones may not have access until they get a death certificate which can take quite a bit of time in some cases.
Property: If you have a car, boat, house, real estate in your name make sure your family or whomever will have access to your deed, title, etc of that property so they can take possession of or begin the process of taking care of your assets. If you have a car or home that you are still paying on: it can take months to get everything taken care of and your lenders will still expect payment so to prevent repossession or foreclosure I really advise you have this information available to whomever will be handling your estate.
Why does it matter? Putting your affairs together can be a pretty tedious and lengthy process, If you are leaving behind family or friends that will be taking care of your assets when you CTB I strongly encourage you to take the time to get everything together. Your friends and family (no matter how estranged or little you think of your current relationship) will very likely be having
an incredibly hard time with your passing and all of this will help them through the process since grief can make it
almost impossible to do anything productive.
Sorry for the long-winded post. Just some general advice that will help make sure your last wishes are followed and to help out any friends or family through the aftermath.