A small environmental/playground Knytt Stories level I made rather quickly (for me anyway) using an idea I thought would suit the 2021 KS Un-epic Level Contest but ended up not using there. It's a very short one, although it features quite a lot of hidden secrets to be found, including a tiny special area you can unlock by collecting all four keys.

You can also play it in Knytt Stories Plus to enable a bonus collectible that doesn't unlock anything but looks kinda cool, if that's one of those things you can never have enough of!