wow....when you break it down it sounds like heaps...for us it really depends on where we are going and for how long... we always have in the bag
2 spare nappies
nappy sacs
wipes
cloth nappy
change of clothes
one dummy
a bottle of water for Matilda
another bottle for feeding with water in it & a container which holds the formula
bib
and plastic bag for dirty things.

Right now we also have brauer teething drops & bonjela, rusks as well. hmm... oh yeah! always have two small toys, book & playgro toy....

Then my stuff... breast pads were a definate in past and my wallet, keys, sunglasses & mobile.... maybe lipgloss if I'm feeling good...LMAO!

Thats for all trips... if we are going out for the day we will bring more outfits & more formula & bibs & nappies... but not heaps of extras... I hate carrying things around I don't use and half the time if I'm going out for a quick trip I don't even open the bag, but the time I leave the bag at home is when she does a monster poo all over her clothes exploding everywhere... well thats happened twice!!! So I never leave home without it now!