You could do grapes dipped in freddo bar?? You can get about 20/30 grapes dipped in chocolate out of 2 and would cost you 10 syns (you ARE allowed 15 a day, but is recommend for best WLs you stick to 10.)
Frozen curly wurly will cost you 6.5.
If i go to cinema I usually have a happy meal at the cinema first, so although I don't get the "cinema treat" I still get to join in in a way.
Last time I went I just decided to have flexible syns- happy meal, a bacardi and diet coke (brought from home so I knew it was the right measure) and a frozen curly wurly. Cost me about 20 syns BUT it was on WI night and I still managed 4 pounds the week after!
Seriously though, i am the biggest crisp and chocolate fan in the world- but I can manage on fruit now.
Its just getting your body used to it. Take something really sweet is my recommendation!