Had my first flat luckily about 3-4 miles from my home and did not have any tools on me to fix it. I rode the rim back to my house - tell me if I've probably damaged it in doing so, I'm sure I did somehow although I don't notice any physical damage - and then kitted myself out with the tools necessary to replace the next one that goes down. I should carry an extra tube on me as I feel patching will probably not work out as well as just throwing an entirely new tube in.