I've always wanted a miniature guillotine for some reason so I finally decided to build one of my own.
Stands around 16 inches in height and constructed from pine and poplar woods (and a few other random materials). Aside from the bucket, I constructed every element of this, right down to the pulley on top. Not only a standalone model, it is also functional, featuring a rope to raise the blade, a release mechanism to carry out the execution, and a hinged guide board to help direct the decapitated body into the carry box. In addition to the wood stain, I also gave it a weathered look to simulate actual use.
Some heads are gonna roll!
(..but only if you're around 5 inches tall or so)