Building a dune buggy with a kawi 600 engine right now but it was only ever meant to learn how to build them, the next one will have a 1000cc+ engine, double superchargers, adjustable ride height (independent), transfer case (this first one is just rear swingarm/chain drive), fully road legal, with the option of pulling the rear rims and swapping out for snowmobile tracks.
There are going to be a few other options but that sums up the basics.
I also work with leather and have built leather armor bolstered with stainless steel plates. For both forearms and lower legs.
It took about a month to get accustomed to the weight increase but I can bounce across the blacktop all day now and just make sparks.
I make scabbards and sheaths as well but haven't needed any new ones for a while.
Just spent a bit of time improving a gassifier I had built a few months ago, it is meant for wood but I also built a big one for burning household garbage to heat a trailer I use as a workshop.
Took the fairings off of the sportbike last winter and remade them in 2X2 twill carbon fiber, then airbrushed lightning over parts of it. I had never used an airbrush (or carbon fiber) before but it turned out all right.
When I get a bit of time, I'll be finishing a set of kevlar+nomex+wool pants that are still on a knitting machine (I couldn't handle manually knitting) but it's VERY tedious so that project is one of the last of my priorities.
I have started a new business building traps and power snares as well. I am a registered trapper (and a horrible stereotype) here in canada and saw the need for these.
Tried lapidary work a couple of weeks ago, I wanted to try working with jade but it was so boring I just ended up on the sportbike every time I started carving...
There are probably more that I am forgetting right now but there is always something new to do! ^_^