Dropped tents (when placed on a Gold Tile and the player plants any plant on that tile if timed correctly) and backpacks (if the zombie is killed) can crush most plants, including Ghost Pepper, which normally cannot be crushed.
Levels will not end until the player destroys all tents remaining on-screen, as they will continue to spawn zombies. However, this only happens if the zombies spawned continuously; quickly killing a spawned zombie without destroying the tent can sometimes end the level with the tent in place.
Sometimes when an Imp Porter drops his backpack, the backpack will self-destruct. This happens when an Imp Porter dies in the last column (where the zombies enter the lawn), or when there is already a backpack behind it.
The backpack appears to be already damaged, as there is a patch sewed onto it.
It is similar to the arcade machine that Arcade Zombie pushes, as both work as a type of obstacle against plants and can summon zombies.
Coincidentally, both the tent and arcade machine are found in the second part of their respective worlds.
Dropped backpacks can be seen as the opposite of surfboards, as the surfboard will fall on the tile ahead of the Surfer Zombie, while backpacks land behind the Imp Porter.
Electric Blueberry is unable to target tents or backpacks with its attack.
