^^^^. Not at all foolish to keep small amounts of local currencies when one travels in and out frequently. I appreciate having no need to make the ATM the first stop on arrival after an 8 - 17 hour flight. No concern as to whether or not my taxi driver will take my CC when I know I'm carrying sufficient cash if required. My "cash stash" tends to arrive and leave pretty much in tact for many locations as CC is my primary method of payment. I have been in situations where electric was down and cash was required in normally "cashless" situations. Glad for the stash.

I have Euros and Hong Kong presently. Just found a 5 pound note that I will use next month. I don't typically keep UK currency after making a trip to the Bank of England las fall to exchange some just expired bills. Spent down the Singapore cash to zero as those trips ended. Same with Canadian.