Vending machine

Mister Apple gets a tuba.

LED42 inserts a Nintendo 64.
 
Mister Apple gets a lawnmower. He proceeds to mow the grass near the vending machine.

Luigi 64DD inserts Waluigi's Taco Stand.
 
LED42 gets a lot of Brick Blocks. Don't worry, they will change back to coins after 10 units of time. Was it seconds, minutes, hours, days, or years?

Yoshi the SSM inserts a mouse (not the animal kind, but the computer kind, as I don't like the animal kind).
 
The vending machine disappears. It reappears in front of Koops.

Koops inserts a letter that reads "Mister Apple, putting Portal guns in there won't get you anywhere!" The machine teleports back to Moster Apple.
 
Koops gets a confused letter from BBQ Turtle saying "What's a Portal gun, and where did this vending machine come from?".
BBQ Turtle inserts a conch shell.
 
BBQ Turtle gets a couch seal, a mysterious hybrid between a sofa and an aquatic mammal.
Mister Apple inserts a letter that reads "Mister Apple, putting Portal guns in there won't get you anywhere" signed by Koops.