Tell you what Debbie, if you get yourself a few servos and get Clive to mod them for 360degree operation, stick some jam jar lids on (or god forbid buy some wheels!) and four aa batteries with a holder from maplins you can put them between a carboard body and then practice driving.

That was the first robot i built for Luke and its been rebuilt in many many different ways by him and gets driven regularly even now. We used a 9v battery at first which lasted a while but it tends to blow the receiver after a while.

If you can get it set up on single stick steering even better.

You can build a small assault course for it and all sorts of stuff. You really dont need to running the bigger robot all the time and it needs no space at all so it get used more.

You can always swap the receiver between the two as well.

Andy