I just moved out from my parents home and found a lot of Duplo Lego bricks, so I decided to make a centre mount for my TM Warthog biggrin
Glued all bricks together, drilled the holes, finished!

http://www.abload.de/img/foto06.10.11220018nejc.jpeg
http://www.abload.de/img/foto06.10.11220028sfm4.jpeg
http://www.abload.de/img/foto06.10.11220009efh5.jpeg

Sadly, the base plate is not heavy enough, so it’s not very stable...
But if you would mount everything on a wooden plate it should work.