Dried apricots are amazing.
Also, Tesco do a great bag of mixed nuts and raisins for just £1.35, amazingly cheap!
On the fresh side of things, I do love freshly sliced pineapple and melon is good too!
Try thinking outside the box, I even got some lychees to snack on and they were nice
Berry selections are my favourite, just buy a selection of berries from your local store or market and mix and match them and they taste amazing
Also, tinned mandarins are to die for, although at times they aren't overly filling so maybe bulk it up with some tinned melon.
Also, peanut butter on toast with a protein shake is great! I also like to use cashew butter, sooo good!
While we're on cashews, cashew nuts are great for snacking on too!
I also find that white tea or other herbal teas can sometimes give me that 'fix' I am after
Bananas can be filling and they have great health benefits.
Egg sandwiches are great, hardboil the eggs (put eggs in boiling water for around 15 minutes, then mix with extra low fat mayo and whatever seasoning you like (I like to change it around but coriander, pepper and parika is nice, cumin and turmeric I also add sometimes)
If you're feeling superhungry then tuna pasta is an option, add some veggies alongside to boost the nutrients
Quite a few suggestions for you here, if you want more then ask and I will search my brain but I'm sure other members will contribute some good ideas too (I really wanna try the banana 'cookies' I saw posted on here somewhere