The festivities will be video-taped, so have a volunteer or two with video cameras to capture the whole event (suggest husbands or friends that are not involved with the shower). Provide scissors and tape dispensers.
Ask guests to bring UN-WRAPPED gifts, wrapping paper, ribbon, bows and gift tag. Suggest light weight gifts, such as sheets, towels since everything has to be shipped to the mother. Check with UPS for "ground" shipping -- heavy weights that can be delivered in 8 to 10 days are inexpensive compared to other carriers and the Post Office.
At the Shower:
The main activity is video-taping the guests wrapping the gifts (but only after the item is covered if the box is printed with the name of the gift). The guest can talk to the Mommy while she wraps, wishing her well, missing her, giving advice, etc. After the gift wrapping, food and/or cake is served, games played, close the video.