I did a few different things with it, and am still working on one of them (it constantly changes)
One of the first things I did on my island was make a beach bar (I now have 3 of them: 2 on the beach and 1 on the rocks in the back of the beach on the right side of my island). This is actually my smallest bar out of all 3, but I really like it! I wish I had some more room for some lamps though :c
I don't have many rock-space on the left side of my island, the 2 rocks that I have are really small. I used them as part of my path leading up to the musical beach that's on my back rock on the left. It's not 100% finished, I might take some of the flowers away (I have too many) but I really like it! on the other small rock I currently have a moon (that's all that fits on it lol) I'll change that for something else but not sure what yet, maybe a little sitting area~
I also have a little rock space on the right side of my island, it's bigger then the one on the left but I'm not sure what to put here. At first I had some fossils on display, then I added the fishing tools and now it's kinda pirate themed (I don't have a picture of it but I put some gulivarr items here) this will probably change haha, but I like walking around here a lot because of the shape of the rock c:
ahh I don't have a picture that shows the front of the rock very well :c
this is the best I could find (so this rock connects to the upper one)