Diamond Art Bin Caddy

My wife does a lot of diamond art and she had open packets of different colored diamonds all stuffed into a container where she'd need to dig around to find the correct color, then she'd need to make sure the 3 digit color number matched the reference number on the painting.I created this caddy so she could organize the little green trays and for each painting.She just wrote the painting numbers on the front of each tray.I printed 10 trays (30 little green bins) and it's really solid. I'm sure this could easily expand to 30 trays (90 little green bins) and still be solid. What's neat about this:It's easy to printNo tools needed (although the pins are a tight fit)It's expandable (print as many trays and pins as you want)It's a caddy (the top has a handle)It's somewhat spill-proof (to about 20 degrees) without the little green bins falling outPrinting and assembly is easy:Print the top (1 time print)Use supports under the handlePrint a tray (print as m