Mostly things electronic. I like seeing what other people are doing (and stealing the good parts for myself ), and showing off the things I have done.
Sounds a bit like me! I have more projects on the go than I can remember, some that have already been in progress for years, waiting for time, parts or inspiration.
Examples:
Recreating the first two computers I built in the 70s, with the same CPUs & I/O etc., but far more compact form using PALs/GALs rather that dozens of TTL IC for the glue. (6800 with MIKBUG, on a single eurocard, and a 6809 OS/9 system with disc interface on three eurocards - both originally were in 19" rack cardframes).
A large tracked robot with stereo vision & LIDAR etc., using a Jetson nano & ROS based control.
A full size animatronic raven using a PIC with seven servos, sound module and speech recognition module.
Spot micro quadruped, also with a Jetson.
Radio control for testing, calibrating and limit checking the various robot servos.
Openmower lawnmower (just waiting for the prototype control panel PCB, as I used a different chassis to the original designer).
Endless bits of home automation; for that at the moment, a Jetson based offline speech recognition system.
(The main system is based on Homeseer, but that uses Microsoft built-in speech rec with is very poor).
A toolchanging 3D printer, needing a new X axis system designing as the X rail I used is not precise enough.
Numerous PIC-based gadgets & designs for all sorts of stuff.
Test gear; A thyristor tester, a graphical display optical encoder tester with adapters for various machine tool connector types & pinouts, a noise source for audio testing, a few 16 channel switch + light boxes for PLC program testing etc. etc.
Audio gear - PCBs to build a preamp design I wanted, but no boards were available for.
Microphone PCBs to upgrade cheap fake condenser mics to studio quality.
And who knows what else I've forgotten at this instant,
I just like building and programming things! But nothing is really relevant to this forum, unless someone asks a question related to one of them.
A do put some stuff on my web site or youtube channel, but only a fraction of it & often just bits of educational or novelty stuff.
The "Projects" forum on here is titled as if it is purely for people requesting help with or ideas for a project they are working on.
Possibly the admins could add a new and separate main category for displaying or showcasing peoples projects working or work-in-progress projects? That may also bring a few more people to the forum.