Thanks, Janet, that's given me some ideas, but I don't think my creative abilities stretch to that.
More details for those of you left in the dark. The layout sits on 3 pairs of metal legs (from Ikea) this photo shows two pairs assembled:
When out on the road it has a skirt around the front:
So - there's just room to see the bottom of the legs. Some exhibition-viewers, going along with the plot (as it were) have asked where the elephants are that support the "world" of the layout. So the idea is to put "boots" on the bottom of each leg, that are made up to look like elephants' feet, so I can just point to them as say "there you are!"