I use a Soma Townsend Hemp Seat Bag: Townsend Seatbag | SOMA Fabrications

Carry a spare tube for your tire size, tire levers, patch kit, and inflation system. I have a pump on all of my commuter and touring bikes.
Latest purchase, Park Tools Mini Pump: Half-Pint Mini Pump | Park Tool

Pedro tire levers: http://pedros.com/products/tools/whe...e/tire-levers/

Vulcanizing Patch Kit : Vulcanizing Patch Kit | Park Tool

Also would recommend upgrading your original tires to higher quality, flat resistant, kevlar belted tires. Cut down on the need to actually use the kit above.