Thanks for the comment and sorry for the slow reply! I was looking for some simple drag and drop javascript with the intention of possibly making a dressup game (currently highly unlikely), found a tutorial and basically yoinked it, modified it to fit my needs and made the toybox as a test.
I don't remember what the site was or how I found it (in hindsight, I really should've kept that info and given credit) but if you want to do something similar you can google "javascript drag and drop" and there's several open source chunks of code out there!
Thank you!