The W Walkerhill has fancy red slippers, that are continually re-used, and they want 25000W if you take them. The Sheraton Walkerhill has plastic - reuseable slippers in the suites. Not for me.

I recall that the Laguna in Bali had these fancy beach slippers in the rooms along with a matching beach bag. Did not know if they were free but I took them and was never charged.