So far, armor and planes but I also assemble the car models...so i guess anything actually. My Dad got into the hobby with model race cars and motorcycles. From there I moved to sci fi models. The last model I assembled was when I was 13 or 14 and it was the chrome plated Enterprise set from Star Trek. Unfortunately all my old models were lost or destroyed in one of my moves due to the lousy way I packed them.
Welcome! I hear you about losing models in moving around. I've lost a few to accidents and encounters with todlers but I happen to still have a majority of the ones I did as a kid surviving although somewhat beat up and worse for wear.