Double Spool Holder for the modified AD5M enclosure

I modified the spool holder from the AD5M Minimal DIY Enclosure by Doug Joseph (design8studio) to hold 2 spools. It will hold two 1kg spools. This is mostly helpful when doing quick filament changes so that you can have the next one ready to go. I thought about combining the lower side spool holder with the upright one, but this one prints all flat without needing any supports.