I use a Swiss Staff hiking staff. It is collapsible but I usually leave it extended while I fish, in case I get into some rough bottom and need a quick steady. For wading I have a lanyard attached and then I also have a carabiner attached to the strap handle to secure it to my waders while fishing.
For fly boxes I like the C&F boxes, but the ones I own were purchased on close-out, so not near as expensive as the original retail. I have found several C&F knock-offs that do the job quite well, but I can't tell you what the brand is, sorry. My C&F box with the leaf page in the middle holds 540 flies...
Kelly.
Tight Lines,
Kelly.
"There will be days when the fishing is better than one's most optimistic forecast, others when it is far worse. Either is a gain over just staying home."
Roderick Haig-Brown, "Fisherman's Spring"