FreeExploding Nerf Dart
Thingiverse
11 model
Free
FreeExploding Tank - Tank Explosion Effect
MyMiniFactory
FreeMini Rocket
Thingiverse
FreeAECAVE0A - Rich Caverns Core
MyMiniFactory
FreeExpanding Spool Holder Hub
Thingiverse
FreeM6 Expanding Nut Holder / Blind Anchor (for 12mm holes)
Printables
FreeAnkermake M5 - Spoolholder - Expanding Mandrel
Printables
FreeFlsun T1 expanding pliers for parallel arms
Printables
FreeToilet paper spindle expanding with Rubber Band
Printables
FreeExpandable Sleeve for Ankermake M5 - Spoolholder - Expanding Mandrel
Printables
Free16mm telescoping rod - print in place self contained
Printables