If I'm going somewhere first thing in the morning and not planning to be home til bedtime (does happen quite frequently - you get the hang of carting these kids around ), I usually pack 8 cloth nappies and then two night nappies. Theory being change every 2hrs max (so that's 6 for 12hrs worth) and 2 for backup, in case I change and get a pooey straight away. And I put night nappy on when we leave as often they fall asleep on the way home and then it's just a matter of shifting them inside.

I rarely use 8 nappies in that time, but I have needed the backup night nappy. Most days I get home and I've only used maybe 4 or 5, so 6 or 7 for the whole day.