spray paints are one material that easily runs out while building gundams, but what do we do with it after? we throw it away right. but we can still use its cover as extra containers, probably for holding and mixing paint and thinner. well yeah, its pretty obvious that spray paint caps can hold things in them but we don't use them anyway, just to make you aware.

but not all caps have the design for this and have an inner circular frame, so if paint falls into the outer frame, it would be harder to reach and it might dry up before you get to use it all.

here is a good example of what i mean, see the two circles? well we would only need the center one so off to cutting!

well all you need heres a cutter or some scissors.

first cut off one side of the outer frame, and slowly work your way into the center without puncturing a hole into it because how can it hold paint if it leaks.

it should look something like this once you rid the other remaining plastics around it. actually this is not only used for holding liquids, see the three trenches on the top? well if you put something to weigh down the center you can also use this to stand your brushes while painting! great huh? well hope this helped, and keep recycling!