My parents run a few businesses where they have to have a fair amount of liquidity/cash on hand for investing into new equipment etc. I have been trying to get them to get 4%+ on this money rather than accept the near zero percent they are getting from their banks right now. So far they have refused.
On the other hand, they make a big deal when gas goes up a dime and that stamps are going up 2 cents. I should point out to them that how they are managing their money is costing them thousands of dollars and gas prices and stamps should be the least of their concerns.