Open the safe

Deflate Oozo

Destroy a cherry tree

Try to mix the red paint and the Booboo-B-Gone

Get a job

Squirt five different people with disappearing ink

Try to mix the decaf and caffeinated coffees

Cook the hamster in Maniac Mansion (Don't try this at home, kids!)

Try to swap the textbook with the stamp album

Try to mix the disappearing ink with Booboo-B-Gone

Turn off the television

Find Fred's basement workshop