Based on community feedback, these are the most consistently available and high-quality easy piano collections currently circulating on PDFCoffee:

Instead of just “easy piano,” try:

This is the hidden hack of PDFCoffee. Instead of downloading one song, search for "Easy Piano Anthology PDFCoffee." Users often upload complete Hal Leonard or Alfred songbooks. A single download might give you 50 Disney songs or 100 Beatles hits, all arranged for beginners.