prop infator.

like the ragdoll infator.

There’s a prop resizer tool Here.

that tool sucks.

Yeah,like you know how inflate even the collision boxes.
The ragdoll inflator “inflate” just the view model of the body part (eg the head) but not his collision boxes because you can’t in the source engine,the head will be abnourmous big,but it will collide with other things with the original head boxes.
The source engine can’t modify the size of a prop,because there’s no code in it.