Here are some of my designs. The one with the great wave in the background was done for a friend. We live on the coast and he said he wanted something to do with the ocean or sailboats.
the other one I posted on KG a while ago. The idea is a reverse pump system so that when you pump the little pump at the ankle the air is sucked out of the lace tubing and it contracts at all the hundred little contraction points, acting like laces.