This is a remix of mgx's "Pegstr" awesome design using his customizer.

It is a collar/mount to slide a 16oz mason jar into. The collar is intentionally made thick to place a label on it, as I hold nails, screws, and other hardware, however you could probably get away with making it much more narrow to save filament. Here is a link to the original customizer if needed

https://www.thingiverse.com/apps/customizer/run?thing_id=537516

As for supports. If you print hooks down, you can get away with deleting supports from the hooks, however, I manually placed tree supports for the pegs and it worked out great.