Suitcase on wheels
While we were waiting for our suitcases in Stansted two days ago, two kids walked past me sitting on pink suitcases.
This looks like a great idea! Suddenly carrying their own luggage becomes a game for kids…
Only problem I can see is to keep them away from slopes in all disguises, or your kids might suddenly travel a bit faster than is advisable at that age.
And in your case ( pardon the pun ) in 4-different directions !!