At easyjet we are required to carry our money wallets, ice tongs, hi-vis and calculator. As well as a PA book, passport, permit to remove steps forms, and landing cards for the UK and France anything else is up to you. (pursers have to carry a sterling and euro float). at the moment we dont have trolley bags either so its all in an over the shoulder bag. We are getting bags with wheels back in March.
We are advised to overnight stuff as well but many crew don't as night stops are very rare, i've never had one in over a years worth of flying for them!!