FMH - Tumbler straw cap (or oil pump!)

Do you know that? You buy linseed or other oil in a 5L barrel, super handy.. But what happens? That pump always leaks!

This simple solution allows you to seal your pump so it won’t leak anymore and it looks super funny too!

Of course you can also use it for what it was actually intended for, to close the straw off your tumbler! ;-)

1 hat, random color.