Hot tip from Reddit - this is like the ‘thingiverse’ for lasercutters. (Thingiverse is also the thingiverse for lasercutting)
https://3axis.co/
Lots of subcategories like model planes:
https://3axis.co/laser-cut/aircraft-kits/
Living Hinges:
https://3axis.co/laser-cut/living-hinge/
It looks like it may be a pretty small group that scrapes other sites… well anyway it’s a resource!