Any holding device - tweezers, clamp, etc. - that delivers enough grip to hold the part will break the part.
A three-cent resin or photo-etched part will fall and hide until about two hours after you have spent $10.00 on a complete spare set.
The shelf life of paint is inversely propotional to the cost.
Cats LOVE models!
The curing rate for glue between the part and the tweezers is about 10X the rate for glue between the parts you are trying to bond.
What else? I bet y'all have got some doozies.
Turning styrene into fantasies for 50 years!