Crap I had to sell door to door as a kid: candy, fruitcake, pens, fire extinguishers (yes really), newspapers, mirrors, grapefruit, my body, oranges, chocolates, cookies, ornaments, magazines, a plethora of stupid little craft items, cheese boxes, frozen pizza, and calendars. There are probably more that I'm forgetting. Now that I'm standing on the other side of the door, I tell the kids to beat it.
Edit: Salad dressing, four varieties, each nastier than the others. Trying to sell that crap was tough. "Want to buy some salad dressing?"
"Is it good"
<contorted face>"Tastes like vomit in corn oil, er, it's delicious!"