TShooters

There's a product called Make-a-Zipper by Sullivans, that includes 12 pulls. Listed on Joanns site.

Mariposa

Atkinson Designs has a great assortment of colors, and extra pulls.

Barbpr

I have ordered YKK zippers from zip it twice. Quick service and very reasonable. You can pick which colors you want. Of course I wanted 20 different colors, as I too am addicted to these Lazy Girl bags and pods! They also sell the YKK pulls.

RST

Since this thread is back on the first page -- I'll share that I've experimented with some variations on the pea pod bag. I've made them with 12 and 15 inch squares, which makes for a nice size to hold a collection of toys such as matchbox cars or shopkins. I've used zipper by the yard which I purchased on Amazon -- it's larger teeth, wider tape than standard garment zippers- - probably intended for light upholstery projects, but very inexpensive and easy to work with for the larger pea pods. You get 30 - 40 pulls with the however many yards it was; those pulls are not interchangeable with any of the YKK or Atkinson packs, so you're pretty much stuck using the matched color, but they are very cheap and hold up well to small kids' use.