Layered clothing, a blanket, a book or ipad etc, snacks. The pre meds can make you sleepy and often snuggling into a blanket is lovely. If you are awake, then you need something to occupy you, especially if it is a long session. Chatting to others can fill some time, but not everyone is chatty ( snoozing instead) and sometimes you might not feel that chatty either.
Good luck, it is rarely as scarey as you think. Get some ginger cordial or similar in for afterwards too, helps with any nausea as well as anything they prescribe you.
Chemo can also cause constipation, so some laxido or movicol as standbys is good too .
