Must be a 'needs' mod. Some vendors are selling them and I also found one in a chest inside a house.

Or is this a Vanilla leveled item that I've never seen before? I only run Frostfall and IMCN for needs.

Frostfall I think does but obviously you'll get all the extras with it, or you could go for http://skyrim.nexusmods.com/downloads/file.php?id=11074.

EDIT:

Oh shame I thought you wanted them but ya wanted to know where they came from...my mistake.

Do you have Dovahkiin Relaxes Too? That one adds a bedroll I believe (for the Sleeping emote).

That must be it! I've also been encountering bedrolls, and I too have been wondering where they come from.

Part of the modding fun... wondering which mod adds stuff

I have them via the camping mod as per the first post

Bingo. I do.

Thanks, everyone. Good to see the source of my non-problems. Always wanted to see if I could sleep on the bedroll naturally, but now I know.

That is aaaaaaaaaaallllllright, dude.