Onion sprouting box

I saw an advertisement for a fancy box to put green onions in to sprouting them. It was a neat idea, but WAY too big for my needs. It also cost enough to make the return on investment about 25 years.  This is an easy print, but the inside should be sealed with food grade epoxy to keep it water tight. 

Add some coconut coir seed mat inside, add a thin layer of water and drop in some onion scraps.

I printed this in Prusament signal white and pistachio green. Even the wife likes how it looks.