I assume you are interested in times for drying already-dry items. (Items need only be dried on hot, but if they are washed, obviously, they must be thoroughly dried and then I would add additional time.)

The problem with this is that there is no easy answer. It takes a lot longer to thoroughly heat a pair of thick jeans, than a nylon sock. And then pillows and comforters? Very long time. The thickness of the item is a factor, so is the temperature of the dryer.

Entomologist Dr. Michael Potter has tested dry cotton socks, and found that a hot dryer killed bed bugs and eggs in a sock in 5 minutes (at 175 F; note, Potter says a hot dryer is typically 180 F in the US, but I believe temperatures can vary a lot). The Dryer FAQ gives more details on drying times at various temperatures, with references to studies we’re aware of.

Given that some things may be thicker than a cotton sock, I would guess that a normal load of dry laundry should be kept at this temp in 20 minutes, just to be safe. If you are trying to kill bed bugs and eggs in a dry comforter or pillow or stuffed animals, I honestly am not sure how long you’d have to dry it for.

A Packtite would be a good option esp. for thicker items like stuffed animals; to be absolutely sure, you could insert the temperature probe into the center of the item (eg through a seam). It can also be used on non-washable clothing.

Some PCOs do recommend bagging non-washables for 18 months, some until the first treatment has been done, and some never.