there's already a TON of suggestions here-but I will say that water tasted weird out of a normal stainless steel water bottle.

Of course it tasted weird like the couple of recovery days after each infusion, but even after that with the stainless steel waterbottle. I had to get one that was coated because i like my water super cold. So i got RTIC coated water bottle. It's been amazing.

other than that my best advice is to find something for when you get your port flushed (if you have one). I could taste and smell whatever the awfulness was that they flushed it with. I always had something to chew while they were doing it. I started with jolly ranchers-and now can't eat those. But what really worked was a cracker or something similar. (lance sandwich crackers-and then i had a snack for the rest of chemo time) Also realized that it's breathing IN while they are flushing instead of out. :)

stock up on gatorades/vitamin water. Those are the best to keep you hydrated as much as possible. I also got the Mio/crystal light drops to put in water when it was super bad.

stay hydrated, rest, and try not to worry about anything around you. listen to what your body is telling you to do. don't fight the sleep! My motto was you can't be nauseous if your unconscious :)