In reply to jonnie3430:
A framed print of a favourite mountain/location or of a shot they've taken themselves
A 'one pot' recipes book for culinary inspiration
Gift vouchers for PYB / local provider
Pieces of kit that you probably wouldn't buy for yourself (smartphone speakers, lantern for inside the tent, camping coffee machine etc)
A night or 2 in a B&B/bunkhouse/hostel/hotel in the Lakes/Peak/Snowdonia
Basically, something a bit different. I'm sure I'm not alone in being quite particular about the technical kit I use and, unless the present buyer was suitably au fait with the vagaries of that sort of thing, I would n't want to risk disappointment or being overly prescriptive with what I want. For me, the joy of getting (and giving) presents is the thought behind them. If someone knows I like being in the outdoors and buys me a thoughtful present that reflects that, or allows me to do it, then that is worth much more to than someone buying me 5 x DMM revolver krabs because I have asked them to.
Just my 2 cents worth.