Put-together

Maze Cube
Meerkats
Miller's Cube
Minas Tirith
Mind the Gap
Mobius loop H
Monge's V-Tricubes
Monkey Loop
Neptune
Nine L-ements
Nine-piece, Nine-color Puzzle
Oct-3
Octominoes
Okey Pyramid
One way to P.A.R.I.S.
Open Cube
Optimal Tumble