Always take 1 tube,2 co2 cannisters and a multitool,tyre levers depending on tyre/rim.For longer rides 2 tubes,2 co2,multitool,mini pump and park patches.Oh and a chainpin.I take a mobile phone in case of really bad luck,although these are useless in some areas.Been running latex in my tubeless tyres recently and this seems to have cut down on punctures no end.Had long walks home before,they are a drag!