Smallrig Crab Clamp

This is a pair of small clamps held together at the middle with ball joints. Like a crab.

Clamp one end around your lock (they grip tight!)
Clamp another end around something stationary (a table, your chair, anything less than 2" thick)
Easy as.

Or remove one clamp from the assembly and use it to make a small lock easier to hold in hand.

Excellent as a travel vise.
Tiny dinosaur for scale.