If you can join an online gambling site without ever being tempted to make a deposit, do it. Join them all. Use the same email for all of them (might be best to set one up especially). They send you free spins every time they launch a new machine. You usually win a few quid on them to entice you to gamble more. Most places have a minimum £10 withdrawal in multiples of 10, so take your winnings and try and make it up to a tenner on roulette. Or just use the money as a free bet. I've made just over £200 in the last 3 months, and I've not used a penny of my own money. Tru story.