I made this carousel cake (inspired from something I saw online). It's definitely not perfect (I only make cakes a few times per year for my kids' birthdays). It would be even cuter if someone is good at making the icing smooth/even.
Here is how I made it: I made a 2 layer round cake for the bottom of the carousel. I didn't have anything to use to hold up the top layer, so I cut the center of the cake out and stuck a metal can (of food) in the center, with another can stacked on top. I just peeled the labels off to get a smooth surface to ice. The hold up the top layer, I took the cake pan and used it as a stencil to cut out a piece of cardboard from a box. Then, I wrapped it in foil and put another round layer on top (don't shave off the top - the raised center makes it look more 3D like the top of a tent would be). To make the horses, I made sugar cookie dough, sketched a horse on a piece of paper and cut it out to use as a stencil, then used a knife to cut the horses (I didn't have horse-shaped cookie cutter). As soon as they came out of the oven, I poked 2 little holes in the saddle area to thread a piece of string through (to attach the horse to the straw pole). Just ice the saddles, and you can't see the little holes. The little cake is the smash cake (you can even stick a slightly-shaved candle in the top of the straw!).