Here are some pictures of my Droid army to date.
Here are all of the oversized vehicles. Most are from WOTC (Black Bases). The MTT (upper left) is an Action Fleet vehicle. One of the AAT's (left) is a Transformer/vehicle and the other AAT (Right) is an Action Fleet remote control vehicle.
Here are all of the ground forces that I have including battle droids, security droids, super battle droids, commando droids and General Grievous with his guards, and the Viceroy. (All WOTC)