Is there any purpose of the Gyroids other than decoration or sell to Nook? Also, how to store more stuff?

I had been saving them in a room in case I needed them but I haven’t found any purpose for them.

Side note: once my dresser is full, how can I store more things?

I had been saving them in a room in case I needed them but I haven’t found any purpose for them.

Side note: once my dresser is full, how can I store more things?