Done in his spare time, the LEGO LHC was created to a 1:50 scale and makes use of over 9,500 different pieces. It took a total of 33 hours to build – after he spent 48 hours on the 3D model to base it on. While it won’t test the fundamental laws of physics for you, it certainly looks very impressive. It cost Mehlhase over 2000 Euros (around $2585) to build, so I guess you can say it’s not something that everyone can afford to build as well.
No word on what he intends to do with this collider, but it certainly would be useful for classroom explanations on how the LHC works.