Here's my Knytt Stories level, or rather the first part thereof (plus some screenshots both from that part, and from later parts). Instructions for installing are at the page linked above. The short play-through tutorial that comes with the software will teach you all you need to know about how to play.
There's about half an hour's worth of playing time in my level (possibly more if you overlook some of the secret areas and need/want to backtrack to find them later on).
My other, ridiculously tiny, easy and pointless level can be found
here.
If you decide you like Knytt Stories, here's
an older post with level recommendations.
And here's some more levels I enjoyed recently. They're mostly quite short and easy:
LG-28 A Black Comedy Oil Darkness (This has one rather difficult jump, and is slightly longer than the rest of the levels linked here.)
Knytt on the Moon (Another slightly larger level. Not large, but not really small, either.)
The Deserted Rustyard Organac Flood Capitalism!