The idea of crafting household items as a squirrel to get to an island is interesting. But the execution falls quite flat.
For starters, some combinations are not obvious, while others cannot be made. I tried crafting by myself quite a few times before I gave up and relied on the cheat sheet, because the combinations of item I made didn't work.
The item combos that are there are interesting, and I like how there are different mechanics depending on what you build to get to the island. But the limitations surrounding them are ridiculous. Clouds are solid and you can't hit them--really?! And squirrels can swim if they must (and yes, I googled "can squirrels swim" after you game told me "it's obvious you can't swim" [which is false]). I understand wanting to present a challenge to the player, but this is overdoing it a little. And the catapult item is near impossible to use, since it's very hard to tell how far you have to shoot to get to the island.
The art is charming, but the writing is riddled with typos. And the music gets annoying fast. I don't find this to be particularly faithful to the original comic it's based on (which is the squirrels getting to the moon, not an island), but perhaps you changed it for a reason?
Overall, I wanted to like this game, but I personally didn't enjoy it. I'm sure there are others who will, though.