3 Dinosaurs has an apple pack with tons of great printables (my colored ink cartridge was low).
Confessions of a Homeschooler has a letter A/Apple pack.
A Teaching Mommy also has an apple pack
Big Apple Little Apple is a fun file folder game matching up the large and small apples.
Making Learning Fun has all kinds of activities and ideas with apples including sequencing apple tree pictures.here.
I was surprised to find that he really enjoyed the Granny Smith apple. I thought he'd think it was too sour, but hear he is giving me a thumbs up.My son also did apple prints. Dip half of an apple in paint and stamp a blank piece of paper.
"Ten Apples Up On Top!" by Dr. Seuss to me.
Here is a link to what I did in 2010 with my older boys.
Here is a lapbook about apples.
Kidssoup also has several apple activities.