Mr Hobby Paint Jar Opener!
Part number GT-56
Opens 2 different jar sizes, one of which is Tamiya - Lot safer than a set of plumber's pliers :-)
Includes jar gripper (the blue bit)
Bought from https://www.emodels.co.uk/
Sure beats trying with your teeth!!
Actually done that :-D
Used to use slip-pliers but cracked a pot a couple of weeks ago so started looking for summat which wouldn't remove a thumb
Looks like a nice little helper with big effect!