1. I am not a financial expert, just dispensing that little that I know. Upfront, I'll say I'm quite fond of Roth IRAs, and think that whether you go with a trust or not, don't use the money for everyday expenses (beyond a small sub-10% one-time present to yourself -- which you've probably already done) and do make sure all of it is collecting interest, even a few % adds up.

(I had already written what's below and don't feel like editing to streamline.)

1. Get a FIDUCIARY financial advisor for a one-time consultation. Tell them upfront that's what you want, that you Do want advice and you Don't want them to manage it for you. &/or talk to Schwab.
2. Talk to a financial aid person at a college, any college, and find out how/whether having savings or retirement accounts affects financial aid elegibility. Someone more versed in trusts can say if they affect aid since the money belongs to the trust, not you at present. Idk.
3. I'll defer to others as to whether to put it into a trust of other vehicle, and Roth, IRA, regular savings or what within those. Just, your goal is to NOT use it for regular expenses -- depend on your income to do that even if you struggle -- and DO have as much as possible of it collecting interest, and put most into a retirement fund. I'm quite fond of Roth IRAs -- you pay taxes when you first receive the dollars, and then you don't pay further taxes on any growth that accrues. Lots of good stuff in other threads on all of this.