Since I don't have $50/day type money, I would do these things if I had it:

• Buy healthy food.
• Buy exercise equipment, or a gym membership.
• Put enough away until I could hire an accountant/start a business and/or nonprofit / etc, or at least hire people for the parts of my various projects I cannot handle alone or with too low charisma to amass an army of reliable volunteers.
• Due to my disability, the amount of independence I have and the amount of money under my control are likely to correlate. I can't know for sure without being rich, but money would let me travel more freely, hire people who know what they're doing if ever I need assistance, pay Meta Med to point me toward the most likely cure, and in the meantime, buy all the accessibility gadgets I can't currently afford/justify asking the government to pay for.
• Healthcare! Life insurance! I'm still not completely convinced regarding cryonics, but it's not like I could afford it even if I was.
• Books. Books are orders of magnitude more expensive for me than you, but the same principal applies. I have a good decade worth of books I haven't been able to read, and if I suddenly had the money to get them...
• There's probably useful training I could buy, I dunno. My communication and charisma need work. Purchasing power means I can shop until I succeed.

And that's just the list I could make without stopping to draw breath (If I stuck to the identifiers rather than descriptions). I suspect I could come up with more, given a little effort. Even if I don't move, my trailer could use some serious work, not to mention a security system.

While some of those are luxury type things, most of them are serious health / quality of life-related, and boons to rationality besides (good health and books and access to more people seem like they'd help on that front, at least).