My roommate tried that same trick on me last year with a loud kitchen timer for when I forgot to take out the trash. I just started hiding it in the freezer behind the frozen peas, it would beep but by the time she found it the moment was gone. Honestly the best counter is to set your own timer for when you need to do the thing, beat them at their own game before the beep even starts. If you really want to shut it down, buy a silent vibrating timer off Amazon for like 12 bucks and use that instead, they can't weaponize what they can't hear. The whole thing is just a power move, ignore the beep long enough and they realize it doesnt actually get you to do anything faster.

I read somewhere that the real magic in those Therm-a-Rest pads is the reflective layer inside bouncing your body heat back at you... the Coleman just lets it soak right into the dirt. That warmth difference was a total game changer for me too once I switched.