You can probably get some bags that halves come in if you wanted, am sure they would fit a few boxes of pennies no problem. If your rolls are paper just whack them on the edge of something (like a counter, but don't do it to yours as it may damage it) then dump, it takes no time at all. Banks may just give you some of the bags, if not, find a few banks that order coins in bags and just keep them and turn coins in with a coinlok bag. Banks usually have huge zippered bags they will give out if requested nicely.