For about $10 million, you can go to cosmonaut training and have a chance at getting shot up into space. (If your launch gets cancelled or you get sick, the money is non-refundable.) Or, you could bring the wooly mammoth back from extinction
I’m a long way from having $10 million to spend on something random, but if I did, I don’t know which I would pick. Probably bringing back the extinct animal. Come to think of it, you could charge admission to see and maybe even pet it, and you’d probably even get your $10 million back in a few years.