E cigs.
They're quite good until the battery runs out , and you've forgotten to charge up a spare like. 
Can you get a usb charger like.....
any brand names I can google ... 
Got one. 
Where's this link on Champix then?
Have a google on champix problems or champix lawsuits...
It is supposed to block the 'nicotine receptors' in the brain which is utter bollox - you don't have nicotine receptors any more than you have chocolate receptors or carrot receptors...
It works by blocking the pleasure you get from smoking - or anything else...
Try an e-cig - there are plenty on the market and have good results - you'd actually be better with snus but the EU has banned them - bastards!