Need a micro-positioning device for your magnetic tweezers or dissections? Check out open-labware’s 3D-printable micromanipulators. These seem to be based off unmotorized models by BackyardBrains which are also open source in design but can be bought directly. That latter option isn’t cheap though, at around $100 a pop.
And for those of you who are curious, here’s why I call them Waldoes.