I asked OpenAI about Easter and found this interesting. It finally makes sense how eggs and rabbits were aspects of it:

๐ŸŒธ Pagan Spring Festivals
Long before Christianity, many cultures held springtime festivals celebrating:

Renewal, rebirth, and the return of light and life after winter.

Fertility and the cycles of nature.

Some relevant traditions:

Anglo-Saxon pagan celebrations honoring ฤ’ostre or Ostara, (aka, Ishtar) a goddess of spring and fertility. This is where the English word "Easter" likely comes from (as noted by the Venerable Bede in the 8th century).

Symbols like eggs and rabbitsโ€”which are modern Easter iconsโ€”trace back to these fertility rituals, not to early Christianity.