This is my version of the Disneyland and Disney World Tea Cup Ride. The tea cups have went through a few paint jobs throughout the years, so paint as you wish.
If you want to make this model spin, purchase a 608 ZZ bearing which is a common bearing used in skateboards and fairly inexpensive. Glue the inner part of the bearing to the bearing plate and the outer part to the saucer. Test fit before gluing, of course. Shim if necessary.
The saucer is 213 mm in diameter and the largest piece.