Items to bring with?

Hey guys. Watching some camping gadget videos with my boyfriend and it just got us wondering, why does no one bring other interesting items with besides a knife, bow and arrow, firelighters, etc. Although I know the N&A people give you a firelighters and pot most times.

But why has no one thought of bringing something like a life straw to drink water instead of finding safe water or boiling water every time? Or a solar lighter to make fires easier? Or, and I know this is far fetched and defeats the purpose, a blow up mattress/fuuton? Or any other cool and useful gadgets?

Are there rules about the items you're allowed or not allowed to bring? Is there some sort of list they make that gives certain items you can bring?

I think the most innovative one I've seen is the person who brought duct tape which was a cool episode, and the few people who bring mosquito nets which can be very versatile not only for keeping bugs away, but for fishing and things like that.