Toddler Birthday Party on a Farmstead

My son just had his 3rd birthday party at a farmstead.  The kids got to experience what a classroom looked like in the 1800s, they also got to feed chickens, pick apples, beat a rug, and washed washcloths and let them hang dry on a line with clothespin.  What a great experience! On top of that, we had beautiful weather in the Big D.  Do you have any fun birthday themes and ideas?