In the workshop, you can process collected scrap parts to obtain randomized rewards. Collect enough scrap and place it into the machine. The more scrap is collected, the better. You can start processing scrap when you reach a single star or higher, while higher stars may provide better rewards!
Scrap parts can be earned from loot chests and collectible chests on levels when feeding ||King Pig|| as a reward. Those can also be obtained by using additional snout coins.
Tap the wing nut button on the bottom right menu to enter the workshop.