Not sure if this is exactly in the spirit of the OP.
I’m not a big gambler but on rare occasion have found myself in Vegas. The last time I was up over 25 grand. I realized I was going a little crazy with the windfall and didn’t want to blow the entire wad.
So I purchased a cashiers check for $20K and mailed it home to myself. This made it impossible to gamble with it.
I intended to piss away the remaining 5 grand and have a real good time but ended up winning an additional $2300. Came home with over 7K in my Pocket plus that check waiting in the mail box.