The TP (Terry Pratchett) series will go all over this area, which I hope to expand across the many footpaths cris-crossing the levels and Eastbourne.
I have tried to vary the caches so they are not all film pots, made some easy and some hard. Good luck on your travels across Discworld. I have tried to make some relevance with the cache name and the cache itself so a knowledge (google or brain) of TP's work might give ou an idea of what you are looking for or where it might be.