As a kid I had a *little yellow plastic skateboard (I couldn't skate 😅) I swear it was called a polly jammer.... don't know the right spelling but that's how it sounds. 😆
My first Skate was also a little yellow plastic guy! We called them "Banana Boards" & I think mine was marketed as "Sidewalk Surfer" :P I couldn't skate either. But I eventually figured it out, once the '90s rolled around.