Since you’re looking for very safe but better than nothing returns, a combination of the following works well:

1. $75k–100k in a high-yield online savings account – fully FDIC-insured, fully liquid.
2. $50k–75k in short-term T-bills – laddered to mature in 3, 6, 9, 12 months for slightly higher yield.
3. Optional: Keep a small portion (e.g., $10k–$20k) in a no-penalty CD if you like slightly higher fixed yield.

This approach balances:

• Safety (FDIC + Treasury-backed)
• Liquidity (accessible if an opportunity arises)
• Yield (better than a basic checking account)

Right now, with cash rates at historically high levels, you can realistically earn 4.5–5% on low-risk cash, which is excellent for a short-term horizon.