He even designed a little seahorsey friend for them.
I usually do all the designing around here, so I love it when Dylan gets on a kick. Like mine, not all of his designs are winners. Those end up in the reject pile. You can't succeed if you're afraid of failing though, and mistakes are wonderful teachers.
Even the youngest member of The Cart got in on the design action this past week. Here's a drawing that my sweet little guy did-