If I don't have crisps or biscuits in the house, I don't miss them. I recently tried counting calories and found I would be fine if I just stuck to meals. Snacks are over and above the calorie allowance.
Sometimes, though, I can't resist, and will buy a packet of crisps (which I naughtily crunch in the car on the way home) or biscuits. One biscuit with a cup of tea or coffee is just no option for me, though, it's rarely less than 3 - and that's only whilst the tea is brewing!
I'll randomly open the fridge and chew a stick of celery or a chunk of cheese, though. Bananas are the only fruit I will absent-mindedly chomp outside mealtimes. I have to force myself to eat an apple.
Love cashews, though - I agree that it's pointless to sell them in resealable packs!