Lesson learned! Bought a 30 pony bottle.

[mattd]

Hmmm, I've been doing some talking about a pony and no one offered to sell me one.  I did get to borrow one though.  Its definitely on my list to buy.

For the necklace, you can do that super cheap.  Just take a length of shock cord, tie knots in it, and then put it in the zip tie that holds the mouthpiece on the reg.  That's what I did with my backup reg when I recently switched to a long hose.  Its worked for me so far.