What was your first DIY

I first started DIY on my older trailer that is long gone, but it was simple stuff like adding shelves, and stuff like that, mostly customizing, and I had to fix the bed support in the passthrough storage when a friend of mine broke the bed support.  I never ever though of taking pictures back then.

what was your first DIY?  lets hear about them and if you have pictures, Lets see them also!

 

here is mine

the first recorded DIY I have was the power center on the 1991 Slumber Queen.  

this is what came with it, a single stage battery killer 

there wasn't any replacement sections to this one and I wanted to get rid of the glass fuses and the AC reset breaker, so I ended up going with a PD 4000 series.

I had to enlarge the hole a bit

I split up the DC into a couple more circuits and added an AC breaker for future use

and the final result