Autosmart Blast, the Bubblegum one. Amazing! They're £3 from an Autosmart guy and will last forever. Just don't do the old flamethrower trick with it in your house
http://www.youtube.com/watch?v=Glals...e_gdata_player
You also get as said above Berry Blast and a Cool Waters smelling one.
The purple feet Grants talking about, you get them in Halfords but they also sell it in a wee pouch that goes under the seat

They smell lovely!