This pump is really great and has lasted me through 2+ years of pumping and still going. It holds a charge for days and it's so convenient that it doesn't have to be plugged in in order to work!
S1 Plus Premier Rechargeable Double Electric Breast Pump
Put it on the side you're not nursing on and bam! You have some milk to store!
haakaa Manual Silicone Breast Pump 4oz
This thing is magic. I have no other words. It works so so well!