My son has asked Santa to bring him Lego Batman suit swappers to use with his minifigures, both Batman and Robin versions. Can anyone advise as to what pieces are needed for these? All help is very much appreciated by Santa and his elves.
You mean one of these?
Basically, you'll need two circle of these 4 x 4 corner bricks:
Separated by some of these Plate 1 x 2 with Handle:
I don't think the centre red tile with an "R" on it exists, so I think you'll have to make one out of card or something.