where to keep money

when last i checked, paypal was the best place to keep money 100% liquid and earn a small return. the money market fund for paypal balances has fallen from 5% last year to a current 3.3%. where is a good place to keep money? i feel slightly more brave/interested so an investment that is not liquid for a short amount of time is also ok. Certs. of Deposit are boring. A bond sounds interesting.