Fish-A-Waja
Fish-A-Waja is a very simple daily game which is free to play and can only be played once per day. It can be found in the games menu by clicking World, then Games. This game is designed to be like a common fair/carnival game called fishing for ducks, in which several rubber duckies are set up in a small pool and fair goers are allowed to pick one and receive a prize based on what's written on the bottom of the duck.
Fish-A-Waja works in essentially the same way, except with plastic wajas instead of ducks. The game's page features a picture of several clickable plastic wajas floating in a pool. To play you simply click the plastic waja of your choice and you will receive WC as a prize. The exact amount of WC you win is chosen at random from a range of about 40,000 WC to around 80,000 WC.
Plastic Wajas
As a bonus, whenever you play Fish-A-Waja there is a small chance that you will recieve a Plastic Waja in addition to your WC prize. Aside from the Shop Search, this is currently the only way to obtain Plastic Wajas.