I have a google spreadsheet with:
- room rates for all of the room types at our resort
- general wedding info, and a list of each days activities if any are planned
- Guest list - name, address, phone number, email and properly addressed name (easy reference!)
- Guests traveling itinerary with highlights of which guests are on the same flights
- A running total of what we've paid, to whom, and what we still owe
- A (growing) list of DIY projects
- A "Still need to get" list - iPod dock, parents' gifts, etc
- OOT bag items: I have a tendancy to buy things just because I like them, so this helps me to keep track of what I have, for who, and how many, etc.
- A gift page - for gift ideas for my bridal party, parents, and any other specials
- A shoe size list.. haha! I'm getting Old Navy flip flops for all of my guests. So I keep a running checklist of what sizes I need to buy, etc.