Although 3D printers are becoming more common in households, they are still underrepresented in many laboratories worldwide and regarded as toys rather than as laboratory equipment. This short review wants to change this point of view. If you are a student who got the "why?" question, share this mini-review and discuss the possibilities opened by owning a 3D printer. If you are a PI, undecided about buying a 3D printer in the lab, read this mini-review, or if you do not have time to read it: just buy one, you will thank me later.