Hi Denise. I’m not an expert and it all depends on where and when you’re camping. But as an indication, the kit I took on this trip was (from memory):
– tent, sleeping mat and sleeping bag
– a change of clothes (light layers rather than thick heavy stuff)
– food (tightly packed dried and canned stuff)
– camping stove, spare gas canister and pan/plate/cutlery etc
– trowel and loo roll (and wee bottle of hand sanitiser)
– water bottle
– camera
And I think that was it! It all had to go on the bike. If I was on foot, I’d consider losing the tent and having a bivvy bag, and taking less clothes if weather permitted.