I just used an empty Nesquik container, measured how much fabric it'd take to cover it, sewed it, pulled it over...
and folded it a few times at the bottom so it can have pockets. That way I can give an incentive for everyone to tip me:
I've made a little sign that can be removed, replaced, re-written.. etc. After a while, I'd take out the money and count it to see who the lucky winner is.
Who would you vote for?
Tips, please? ;)