This is a Christmas ornament that can be expanded. It can be actuated by pressing on the top and bottom or by spinning the top to keep it open.
I also have a Death Star version here https://www.thingiverse.com/thing:4693837
Bolt_Cap.stl | 1.1MB | |
Bolt_Cap_Metric.stl | 1.1MB | |
Shell.stl | 2.0MB | |
Stem_-_Threaded.stl | 1.8MB | |
Stem_-_Threaded_Metric.stl | 1.7MB | |
Top_Stem.stl | 1.7MB |