I thought that looked a little on the wimpy side. I would have never figured that one out. Of course that's not saying much since I didn't know even 1/10th of the tools you showed. I should have recognized some of the brake tools though.

I hear ya on the home-made inventions though and I did come up with a way to insert a MOPAR starter armature/solenoid a few years ago when I had to replace the worn out contacts that I'm a little proud of. I cut four pieces off some old busted mini blinds about 8" long and positioned them inside the starter against the brushes. The curve of the blind pieces was near perfect. As the armature slid in it pushed against the thin metal mini blind pieces sliding the brushes back out of the way. Pulled the mini blind pieces out easily an viola! A couple of bolts later and a perfectly functioning starter for $8 in parts! I was standing there staring at the disassembled starter for about 5-10 minutes scratching my head thinking how the hell am I gonna get that in there without some special tool? I took the last swig of a beer in hand and as my head went back for that last swallow I spotted the blinds on a shelf and the light bulb went on. I'll probably brag about that for the rest of my life.

I discovered a metal cake frosting knife comes in handy for a wide, thin blade too. Along with a handle-less knife blade I mentioned before it helped to remove a bridge from an acoustic guitar. I've also used modified small turnbuckles for clamping when re-gluing braces inside acoustic guitars and made wooden extensions for c-clamps to glue bridges on them too. Beats spending $50 a pop or more on specialized luthier tools.