The following combo cards are available.

Air Horn :Purple spray paint + Pylon (traffic cone)
Beer Hat: Beer + Construction hat
Boomstick: Shotgun + Pitchfork
Drill Bucket: Bucket + Power drill
Electric Rake: Battery + Metal rake
I.E.D.: Propane tank + Box of nails
Molotov Cocktail: Whiskey + Newspaper
Paddle Saw: Boat paddle + Chainsaw (only one chainsaw is needed, but when assembled it will have a chainsaw at both ends)
Spiked Bat: Bat + Box of nails