I got a pair of Snappies breast milk storage containers from my pediatrician's office and I think they're pretty cool. These slender 1 oz and 2.3 oz storage bottles attach directly to your pump, can be attached to a special nipple for feeding, and come with an attached lid, so you're never searching for it. The lid is great as it snaps shut audibly and tightly ensuring a truly leak-proof seal. (I've knocked them over quite a few times so I can attest to that!)
Being attached, the lid is also meant to allow for one-handed opening and closing, but I've spilled milk every time I've tried! Since we all know how much crying is done over spilt breastmilk, you can bet I open my Snappies slowly and carefully to avoid any more tragedies!
The only other downside is that I wish Snappies came in bigger sizes! 1 oz and 2.3 oz meet airline regulations and are great for storing colostrum and for storing milk for premies and newborns, but I need more storage space for my 4-month old. So, I've just been using the 2.3 oz bottles to store milk for making Andrew's cereal and I freeze the rest in bigger bottles/bags. Hopefully Snappies will hear my cry and introduce larger products in the future (one can hope, right?)
Snappies are made of food-grade polypropylene material, which doesn't bind or hold fat during storage. If you're interested in giving them a shot, you can purchase a case of 12 2.3 oz containers for $13.50 or 10 1 oz containters for $8.00 at the Snappies website HERE. The containers are also available in bulk.
Happy pumping! :)