A stamp.

Stamps are accomplishments that the player can earn in Wii Sports Resort. Some stamps give secret rewards. Every time the player gets a stamp a congratulations message is sent to the Wii message board. All stamps can be collected in single-player mode.
Records view

List of stamps

Air Sports's stamps

Archery's stamps

Basketball's stamps

Bowling's stamps

Canoeing's stamps

Cycling's stamps

Frisbee's stamps

Golf's stamps

Power Cruising's stamps

Swordplay's stamps

Table Tennis' stamps

Wakeboarding's stamps