You could get a cheap pistol which could lead to several other lifestyle improvements if you used it well. Jokes aside I think for that ammount of money it depends on your local environment. I could say good cold weather gear but maybe you aren’t in a place with cold weather. I could say a car tow hitch but you might not be in a place where people drive alot and you could save thousands by being able to tow friends cars. You could probably take a class in something and that be the thing I think. I dunno what things you are intrested in but that would be my vote.