@Felthry Having lived at ~5,500 feet, and ~8,000 feet, yes.
@starkatt like little chip-filled balloons.
@Felthry very puffy but aluminized mylar doesn't stretch so they stay pretty much bag-shaped.
@starkatt ooh, randomly remembered, have you ever tried the microwave-chip-bag thing? it's _fascinating_ and seems like you might enjoy it
@Felthry I haven't!
@starkatt okay so get a small chip bag of the metallized plastic variety (small as in the size they sell at sandwich shops), empty it out (presumably eat the contents, but this step is not required and you can do something else with the contents if you so desire), then just stick it in the microwave, centered as well as you can (as long as it's not able to touch the walls of the microwave there's no risk of damage) and turn on the microwave for ten or fifteen seconds, and enjoy the show