Mounting a PCB on LEGO

I was looking for a while for a simple way of mounting a PCB on a construction made of LEGO® parts. Through-hole mount requires precise location of holes on a PCB and limits mounting flexibility as well as consumes a lot of valuable space on the board. The best solution to date for me is a three - four slightly modified LEGO® axle pins (gray pin is original and blue pin is modified) which hold edges of a PCB. The modification of four axle pins took about a minute thanks to DREMEL® rotary tool armed with 199 High Speed Cutter.