觸手研磨器

That suction base really stays put on the tile floor, and the ribs provide just enough texture to make every movement interesting.

The curved shaft hits just the right spot, and the suction base keeps it planted firmly on any surface. Really glad I went for this.

The tentacle's suckers feel interesting at first, but the base doesn't stay put on most surfaces as advertised. It works okay if you hold it, which defeats the purpose.