Love seeing everyone's dog-running gear. Had to make my first post here, because I get stopped all the time and asked about my gear, particularly my golden's dog barrel.
For my weekday runs with my 3 yo golden, I always use this inexpensive unbranded leash and pouch I found on Wish (https://www.wish.com/share/3483iwhkvn) This holds my phone and tiny container for my Venyn nose vents (https://www.amazon.com/dp/B07L916PQK/ref=cm_sw_r_cp_api_i_1kcfEbGSP5F5W), which I cannot run without.
My golden, Cassidy, carries only her collar and dog barrel by RUN LUNA (https://amzn.to/36tbqTT) This product is AMAZING!!! Inside the dog barrel, Cassidy carries a small supply of at least two waste bags and her incidents on the way home. Though I could put water in one of these, I dedicate mine to her incidents and prefer to carry water myself for longer runs, which is why I've never tried a saddlebag.
For longer distances, I add my CamelBak Octane Dart (https://www.amazon.com/dp/B01LA4PF90/ref=cm_sw_r_cp_api_i_n.bfEb1E2PMYD) Hard to beat this tried and true ultralight pack.
Inside the pack, I stuff one of these collapsable bowls by COMSUN (https://www.amazon.com/dp/B073XKD21N/ref=cm_sw_r_cp_api_i_decfEbCGDZA39) for Cassidy. This is solid durable product, but I'm interested in following this thread for lighter options, because it is almost 2 oz, and I'm sure I can go lighter.