My water broke at 29 weeks and I was able to stay pregnant for 11 more days. I was on hospital bedrest for a total of 3 weeks. I was also on home bedrest for 4 months before I went into the hospital.
Sometimes women are able to stay pregnant for a fairly long time after their water breaks. It depends on several things, but at 24 weeks, every day counts! My ob often told me the story of one of her patients whose water broke at 24 weeks who made it to 34 and then had to be induced.
I found that it was hard to focus well enough to read books or watch long movies. I did enjoy tv and reading magazines. I slowly read through several books about preemies. Friends brought in favorite treats from the outside world. The hospital air is really dry, so I would second the advice to send things like chapstick or lotion. I found that getting ready a little every day made me feel much better.
The computer was a huge help...our hospital had wireless internet and I brought my laptop.
Hospital food can get boring, and usually hospitals don't feed spouses. So gift cards for her husband to get food near the hospital or to bring take out in.
We had 2 young children and it was fun to bring our kids into the hospital. I missed them terribly and we tried to make their visits as special as possible. The hospital put a child size table in my room and stocked it with coloring books and crayons. They let the kids pick special snacks every time they came to visit and encouraged us to give the kids baths in my jetted tub (I couldn't use it, but they had a blast!). The night before I ended up going into labor, we had a little pizza party in my room.
The week or so of waiting was also a good time to prepare for the NICU. We took a tour, saw a dvd about a family's experience, learned about the equipment, procedures, and what to expect.