I have recently down graded my nappy bag to just one of those little elmo backpacks. I keep in it 6 nappies- formula container, two bottles in the avent warmer, three changes of clothes, five bibs (coz of reflux), a dummy, sudocream, his fav toy and my stuff. I know it sounds heaps but all the rest of the stuff i have at each parents house who we visit heaps.
At their houses I have a pack of nappies, a thing of nappy sacks, sudocream, a tin of formula, a little pigeon steriliser bag and a bottle.

It makes life easier onyl having a small bag!! I also have a hat for Ryley, sunscreen, bonjella and his sunnies- just going through it now- Wow i have shoved alot into a little bag!!!
hehehe