I had another crazy idea yesterday. I want to expand the capabilities of my Battlebot to equip it with a wheelbarrow. So here are some quick ideas I had:

A pager style personnel tracking unit.
-This would track the person using the thing so that it had something to follow. This eliminates all the crazy vision systems that would need to be in place to track a moving object.
-Follow, Stop, Dump, and come closer commands.
-Emergency stop.

Either a remote computer tracking everything and doing the heavy thinking, or a computer on the barrow-bot.
-Path tracking.
-Path planning. This would include the ability to not only follow the path of the person when they are outside the distance set in the software, but also ignore the path taken when the person is close to the robot. I don't want the robot taking the same pattern when the person is moving around the robot, once the person leaves the range.

A pneumatic lifting mechanism that would dump the wheelbarrow.

GPS on both the personnel tracker, and the robot.

The ability to remove the wheel barrow from the robot. This would allow for moving the wheel barrow around without the robot, or vice versa.

I am sure there is more, but I think this is a good idea.