From the days on my Shovel I still carry all my tools in my left saddlebag. It consists of a nice socket and wrench set, tool bag, filter, filter wrench, oil, and jumper cables. I also try to only use these tools while wrenching in my garage so if I'm stranded on the road I have what I need.
The right saddlebag has my rain and riding gear.

 

rainsuit, baseball cap, first aid kit, emergency triangles, emergency smokes, and an extra beanie in case that hitch-hiker is female and cute! I think I will take up Grumpy's suggestion there though on the TP!

 

rain suite. and most of the time .tire sealer. a couple of rags, and if i'm on a road trip tool kit,extra gloves.a coat and something to clean the windshield.

 

Windzone tool kit - tire repair kit(never had a flat but a few of my friends have) rain suit - extra gloves and some JB Weld...

 

Tool kit, duct tape, rain suit, small helmet, hat, small cargo net, rags and sunglasses

 

Oh, I see now you said saddlebags, my bad.

Street saddlebag, tools, fluids, rags, tire repair kit, cell phone charger
Curb saddlebag, rain gear, neoprene gloves

 

Most of what islisted above plus one important item,analuminum plate to put underthe jiffystand when parking on soft ground, keep it where I can reach it from the saddle.
Lots of littlestuff thats nice to have and doesn't take up too much room: a note pad, pen, deck of cards, bottle of water, smallatlas, cotton gloves, napkins/wet naps, tooth picks, lighter ormatches a couple bucks worth of change, ear plugs, windshield cleaner,detailing spray andmicro fiber towels.

I should putan extrarain suit and aluminum plate in, my wife always seems toloose hers.

 

For everyday riding:
-Tool pouch
-Rain gear
-Extra gloves
-Shock air pump
-Cold weather gear depending on time of year
-Insurance card, registration, HOG atlas
-Clear and tinted riding glasses

 

Crescent wrench, allen wrenches, star bits, bottle opener, several bungees, and three or four towels to cushion beer bottles if I have to break down a six pack for transport to the house. One cable and lock for the helmet and a disc lock. A plate to put under the kickstand if needed.

 

Vinyl zipper envelope withregistration,papers, membership cards, etc.,small put together tool kit,Stop-n-go tire plug kit, 12 v. air compressor, tire gauge and kick stand pad are always in my saddle bags. Other things are added depending on whether I'm on a trip or not.