3 gallon fish tank aquarium for under $5

cults3d

i used a cheese ball snack container to make a 3 gallon fish tank. simply remove sticker, wash, print parts and assemble. The price assumes you have the stuff laying around. the filter is simply an air bubbler inside a piece of filter mesh and stuffed into slit which sucks up waste while delivering oxygen to the fish. i also included a diy light made with 3 harbor freight flashlights cut down to 1" and wired into a rocker switch and uses an old left over 5v power supply /wall socket style(anything between 3v-6v should work fine) UPDATE: added a v2 of filter as the holes were not pulling in enough water and allowing oxygen not to do it job as well.