I saw a team in Atlanta this year (can't remember the number, I think in the 900s, but can't recall right now) that I was very impressed with. They started with a rectangular base with rounded edges on the front and back and had two drop down sides that fell so it became a complete, uniform circle at about 3 inches off the ground. All the way around they had rollers so whenever a team tried to play defense on them they still could turn and do things that way without any issues... plus if the other team hit them at any angle but straight on they would "slide" around the robot. The driver said the added maneuverability it gave was amazing, and overall it's a very simple thing to create mechanically. Very, very cool idea and I wish I had a photo or the actual team number that did that. Definitely something to put in the memory banks for future years
