That design is not sold out-- and thank goodness because it's so cute! Here is the link:
http://www.etsy.com/view_listing.php?listing_id=41045735

Love all of these options! We have a few fabric snack bags from here and we looooove them so much - they've held up amazingly through almost daily use for well over a year now!
http://www.etsy.com/shop/mamamade

I'm a big fan of the Wrap-n-Mat. The adults and kids use them everyday in our house. Very easy to clean! The right price, and great designs for kids.

http://www.wrap-n-mat.com/

I actually bought two at our local Safeway for $5.99 each, and then I ordered a couple online for the fun kids' patterns.
http://www.getngreen.com/store/

i love love love the snack trap. our now 2 yr old has never had any trouble getting snacks. i was worried his little fat hand would get stuck but its very flexable and never spills. we use it for small cookies, gold fish and other small snacks.

All great ideas. Bundle has some super cute mama-made canvas snack and sandwich bags, I love the canvas because the sturdy fabric holds up well to the washing and protects the food. Check them out here:
http://www.bundlebabyshop.com/p-129-canvas-snack-bag-green-stripe.aspx

I had purchased these from ciliciahomeandhearth and not only are they eco-friendly and adorable, it's helping my young daughters learn the spelling of the states. :o)

http://www.etsy.com/view_transaction.php?transaction_id=23539805

Grace Hester Designs
Silhouette- and typography- based artwork and prints
Shop my designs at http://gracehesterdesigns.etsy.com

I love the ones from Simply Practical on etsy. We've used them over a year and they still wash up like new.

http://simplypractical.etsy.com