FreeFREECCANO! It's a Meccano-like playset but free!
MyMiniFactory
8 model
Free
FreeFreeccano - The Curve DLC
MyMiniFactory
FreeSTEMFIE Essentials
MyMiniFactory
FreeSTEMFIE Toy Horse
MyMiniFactory
FreeSTEMFIE - Tools - Fastening - Spanner Nut (SPN-TOL-0004)
MyMiniFactory
FreeSTEMFIE - Tool - Driver NUT SCR PIN THR - SPN-TOL-0001
MyMiniFactory
FreeIllusione Triangolare — Fidget da Scrivania con Meccanismo a Molla
MyMiniFactory
FreeStarfield Security robot (Supportless)
MyMiniFactory