What kind of timeline are you looking at? I tent to layer liquidity like this. Some is totally liquid, some semi-liquid (CDs and the like), and some is liquid over a longer time, but not exposed to significant market risk. For the last category, I have been putting money into merger arbitrage funds MERFX and ARBFX.
"Neither my companion or I carry firearms on our persons. We depend on the goodwill of our fellow man and the forbearance of reptiles."
- English Bob