It may be hard to stay on bedrest now, but look at it this way, once they come,rest will be a thing of the past, so enjoy it while you can! Karen Gromada wrote a good book, "Mothering Multiples" there is also a monthly magazine called "Twins". Now is the time to read up, all those good books about childbirth and raising multiples. This is also a good opportunity to to spend some good quality one on one with your daughter, and prepare her to be a big sister. It is good to explain beforehand that babies need more time and attention, but that doesn't mean you love them more, just because you will be spending more time caring for them.
You could also use the time to make hand made Christmas presents if you can paint, knit, crochet, sew or have tlent with any other artsy media. You can start by making something nice for dh for fathers day to show him how much you appreciate his help and support. You could also hire someone (or beg a friend)to come over on fathers day weekend to cook and clean, so he can have the day off.
While on bedrest, you will not be burning as many calories as when you are up and active, but the babies still need good nutrition to keep them in there till closer to your due date. Getting enough protein is of utmost importance, but any junk foods, or "empty calories" should be avoided like the plague! And don't forget to keep your belly well oiled to minimize stretch marks.
I am really enjoying my 19 month old twin grandsons! All babies are so precious, but having two, and watching them interact, is priceless! Like when Cameron started crying, and Danny took his pacifier and stuck it in Camerons mouth! There have been many "Kodak Moments" like that.
My dd was never on bedrest, in fact she was very active while pregnant, same as before, except that she stopped playing soccer (she was on a college soccer scholarship). She had them naturally after a 10 hr labor at 35 wks. (because she wasn't eating enough protein) Cameron was head down, but Danny was tranverse, so the doc grabbed his ankles and brought him out feet first. She didn't even tear!
Good luck, enjoy your treasures!