... when you have money but don't know what to spend it on?
Save it (possibly in a bank) until I need/went to spend it.
I've never been confronted with this situation. :(
Don't spend it.
I just keep throwing it into the bank until something I want (such as White2) comes out.
Put it in my bank account for college!
(no actually I just save it for whenever I need it)
I usually give it to less fortunate people.
You should set it on fire.