With the removal of the two center screws (on the bottom, you may need a pliers for that one underneath the waist-bracket, as it sticks something terrible), you can open Snowcat's canopy. Small diaclone pilots will juuuust fit inside, with a smidgen of headroom to spare when you close the canopy again.
The canopy doesn't fall out. It's almost hinged; it hangs up on the headlights inside the body, so you can open/close it/drop it without any difficulty. Give it a shot. ;-)