[Cboldt]

Dry ice in a 2 liter plastic bottle will exceed the bursting pressure of the bottle, and the bottle explodes with a loud “boom.” Not particularly dangeorus.

[Buckeye McFrog]

Not particularly dangeorus.

During Y2K there was some doofus out there who was filling sections of 8" PVC pipe with rice and grains for storage, capping them after tossing some dry ice in to suffocate any varmints that might be living in there. When they blew it leveled his house.