a muffler attachment for using exhaust fumes to kill lawn rodents in their burrows

lawnmower headlights (well, if you don’t asphyxiate the little devils, you can take a crack at scaring them to death when they try to get some sleep)

3-D fireplaces

airborne gift packages (promotional samples to be released by balloon) Slightly better ideas that just never made it:

the Peel-Aid (adhesive bandage on a tape-style dispenser)

transparent training potties (to solve the lift-and-check problem)

And a lot of others that were well ahead of their time:

aluminum soft drink containers

cartons for alcoholic beverages

electronic garage door openers

frozen diet dinners

toilet preparations in single-use disposable foil capsules

“television platters” (videocassettes more than twenty years before they came on the market)