Over the last 2 years I have made all sort of different desktop caddies for holding vaping gear.
Here are a few of them:
For KR Batts and Cartos
For tanks, KRs, and actually where I have the PV there are 3 slots for PVs I just had that one laying down at the time.
For Mods or KRs with Tanks
Obey the Skull....Vape!