... there are likely to be more
These are fallen flowers from oak trees! Sometimes the tumble-bundles can get quite sizable.
Look at them lining this path
That one shows the trees, too--healthy and strong this year, so different from the years they've been under siege from gypsy moth caterpillars.
Musical note: here is a lovely tune from the 2003 Fullmetal Alchemist cartoon, played on a music box. This entry was originally posted at https://asakiyume.dreamwidth.org/938828.html. Comments are welcome at either location.