For carriers, check out
Celltei - The Design House for Pets and Their Family Too! - they have some awesome convertible pet carriers that can be used either as hand-carry or as "packs" in the front or on your back.
For boots, def go to
Alldogboots.com: Dog Boots, Shoes & Booties For Your Pet - she is a member here and has the best selection.
When we used to take Wylie hiking, we always brought along a collapsible water dish and water.