As Red Green would say: "Duct Tape -The Handyman's Secret Weapon"

For me, I carried a sawed-down 10" crescent wrench (cut to fit the length of my seat bag), chain breaker, spoke wrench, 6mm Allen wrench, tire levers, patch kit, squeeze tube of white lithium grease, a 1.5oz aerosol can of WD40, flat and #2 Phillips screwdrivers, freewheel tool, crank extractor, a shop rag, and a spare inner tube, and most importantly my flipee-flyer (cloth frisbee-type thing with bead chain in the outer hem) all in my mid-70s 8" long and 5" diameter Cannondale 'Toot' seat bag. Spare spokes were taped to the chainstay with black electrical tape.