Lol I would put them in the bank... .. .... . save up for future use.. ..
if that wasn't possible and I only had like a limited amount of time to use it I would donate to charity maybe even go shopping in charity shops to gain and help.
Then ofc standard Asian rule, I would buy my parents (they have a house.. but) a better house or maybe something for their so beloved garden lol.. That garden which sometimes got more attention than me lol.
Then I would travel around the world to see my online friends, experience the world and of course visit my family all over the world. Especially my grandparents and give them back all the sweet and caring memories they gave me as child.
If I still had money after that I would consider getting a drivers license and a car lol..
but rly I'm that kind of person who prefer to save money so I don't spend it on random things and then one day when I'm in need of money I know it won't be a problem cause I'm never in need of money cause I have a saving! XD
I would travel around buying all of the 1-dollar gold coins until I ran out of the 1 million dollars, and then I would take those 1 million gold dollar coins, and I would put them in a treasure chest. I would then proceed to wear a black eye patch, a gold-trim red trench coat, and hold a hanger hook (because fuck cutting your arm off) and bury the chest at your local beach.
When someone goes metal-detecting there, they'll surely hit the jackpot.