My weakest link is outfitting others to come with. Usually it is my kids, who grow out of the stuff I bought last year. My last trip (this last week in the snow) I brought 4 sleeping bags. One winter bag for me and 3 bags for my son. I had to buy him new boots, mitts, pants, fleece, etc. At least the goggles I got him 2 years ago still fit. The last pants I bought him now fit his brother, so at least I don't have to repeat for #2 son, or #3 son. Eventually I think I will have more stuff than REI.