Royalty Free piano pieces, patterns, rhythms, melodies

[Romy Schmidt]

I don't know if I'm allowed to link, but I came across this and you might find it interesting.

https://composer.rowy.net/Music-for-piano.html

It's an index of a piano album with 366 compositions (a calendar). The first line of each composition is given. You may use these lines in your own compositions, free of rights. It's a rather big album. The index alone covers 79 pages.