Ok let me think.. I am thinking it has been a while since I have done a farm theme.
I love the book "Click Clack Moo". I have a real typewriter and let the kids check it out. Stamp letters "like the typewriter".
I have Going to Sleep on the Farm
http://www.amazon.com/Going-Sleep-We...ep+on+the+farm
I get out the animals from my play animals and the kids like putting them to bed with the story.
Painting with straw is fun.
I have farm animal beads that we string and make patterns.
I have several folder "games" that fit with the farm theme. I am sure you could find some on pinterest.
Oh the book "Tops and Bottoms" ! Talk about what grows above ground and what grows below. Make Tops and Bottoms soup (veggie soup) Carrots, potatoes- bottom, corn peas etc top.
That is all I have off the top of my head right now...