My kid also loves dried seaweed. He is 5 and has recently turned against kale chips.

edamame (shelled) Cook them quickly in the microwave the night before and portion out into serving containers in the fridge.
cheese sticks or slices in the fridge, with crackers.
Frozen yogurt smoothy popsicles (made with smoothy leftovers)?

Kale chips! I just read about them on this forum and decided to make them - super easy peasy, you just remove the center stock, tear kale into bite size pieces, drizzle w/olive oil, sprinkle w/salt & pepper and bake for approx 12 minutes at 350 (at least this was the way I did it).

And instant healthy snack that even my uber picky kids like. I think you could bake a batch in the morning or the night before and have them on hand for afternoon snacks...I haven't tried that, yet, because they've been eating them up too quickly, lol.

Squeeze fruit - 100% fruit. Healthy bites?
Fig newtons
Raisin box
Belvita bars
Whole grain goldfish
Triscuits - plain/mini
Yogurt in the fridge

DD had rice cakes as a snack at school and keeps talking about them. I don't know what kind they were though.

Read ingredients on all dried fruit packages - most have added sugar. I was super disappointed when I started checking ingredients on dried berries or mangoes at Trader Joe's.

My suggestions:
- nuts
- peanuts
- homemade trail mixes you make your own
- pretzels
- crackers and peanut butter
- whole fruit (not fruit cups)
- some cereals or granola
- seaweed snacks
- popcorn (easy to make your own and add your own seasonings)

My kids love the Costco freeze dried apples and bananas + strawberries that pp mentioned.

Freeze dried edamame from Costco, raisins, and string cheese for the fridge

Cascadian farms granola bars are allergy friendly. We are a peanut free home.

Frozen gogurts.

My kids are crazy about freeze-dried fruit (much less sweet than dried fruit), especially the apples and strawberries. Costco sells little single-serving packs, which are handy, but you can also find it at Target and Trader Joes. They also love the freeze-dried corn and peas (which I've not seen at Costco, but other places sell it).

We just found apple chips (no added sugar) at Costo, which has been a big hit. They also like the "natural" applesauce squeeze packs, dry-roasted edamame (there are several brands of them, and I bet at least one is tree nut-free), and the teeny-tiny boxes of raisins (neither of them care much for raisins in general, but there's something about the wee little box). The plaintain chips from Trader Joe's and Veggie Booty are more on the junky side, so we don't buy them that often, but everyone likes them. Oddly, both my kids (ages 3 and 4) love those packets of roasted seaweed. Good luck!

Cheese sticks for the fridge