Ink cartridge recycle box

My kids have to print a lot for their homework.
Therefore we use a moderate amount of ink cartridges every year.
I used to put them in plastic bags and collect them for recycling that way.
I got a bit tired of this (and the plastic bags lying around) and decided to create a recycle box especially for ink cartridges.
This is the result. A box with a recycle symbol and a ink cartridge symbol.
Hope you like, print and use it ;-)