Photos - take more photos than you ever taken before - and then take more. And not just the "hero" shots. Close up portraits of trackers and skinners - the birds - your accommodations - anything and everything - the cook - the dogs - a close up of the best bottle of lager that you have ever had in your life. Keep a log - faithfully. When you get home, sign up with Shutterfly and build a photo/journal album which will be a treasure in your family for generations.