I was going to suggest having a look at the Vegan Lunchbox. Not so much for the menus, although they're very tasty, but for the presentation. She sent her son off to school with the most beautiful lunches, would cut heart shape sandwiches or dinosaur shaped biscuits (scones) to dip in some soup and send him little, loving notes in his lunchbox. Brings a tear to my eye to recall it.
But the site seems to have changed enormously, now is called laptop lunches, and has become much more commercialised.
If you're prepared to search it I'm sure the recipes are still there - I didn't have the heart.
Just remember that the grass is always greener, for kids. The ones taking the snack lunches are probably crying to their mum's that they want homemade cheese sticks like .....!
I had a quick google for cheese dips, loads of recipes, but none of them were like those you mentioned. But if you can make something similar looking, but without the cr4p, I think you'd be on to a winner.
And invest in some interesting shaped cutters - I'm guessing that star-shaped butties will beat those snack pots any day - especially if you invest in a little tub of edible glitter.