Save them and spend them all at once?
Right now getting 50 sats from WoF's.
How many daily WOFs do you have? Do you buy them for RPs?
Remember that freebitco works also like a "saving account", which means you get interest from sats you keep active (available) on your account. In other words - the more sats you have, the more you get, which is one more reason to execute WOFs daily.