crakkusit does fit, both the old bills and the new polymer ones, iv gotten about 22 in there at once (very tight fit and very impractical at that point) but even with one bill it wont fall out under normal use (it will come out if you shake really hard a few times straight up and down) but once you get a few bills in there it fits comfortably and securely (you could probably get up to 16-18 bills comfortably)