I don't have a rental, but if I did I'd put the sinking fund for repairs in a high yield savings account, probably with Ally bank. I'm planning to move my EF there soon, when I combine finances with my fiancee after the wedding.
Where I keep my money:
- Checking Account - ~1 month's expenses, to ensure all autopays go through on schedule
- Savings Account - 5k emergency fund, plus sinking fund for car repair/replacement ($50/mo)
- 401k - federal maximum $18.5k/yr, approx 31% per paycheck, invested in 100% stock
- Roth IRA - federal maximum $5500/yr, invested in a mix of international stock, bonds, and an REIT fund, based on my AA
- Taxable Investment Account - any extra after the above, invested in US stock, international stock, and bonds, based on AA
I don't care for the riskiness and detailed record keeping needed for crypto - detailed records of every transaction are needed to report the cost basis to the IRS, since there's no company like Vanguard to send you a convenient 1099-B. My fiance went through that last year, and it was a nightmare and nearly drove him up a wall. I don't care to invest in commodities/precious metals either.
ETA: You may also enjoy checking out the Investor Alley board for conversations on crypto, metals, etc.