I have a chicken-crazy 4 yr. old who had a "chicken theme" birthday party, with chicken-theme games & presents, and even made a "coop" out of a large cardboard box and a doggie pen/fence.... borrowed 5 chickens from a local BYCer to visit for party!!! Was tons of fun..
Found plush chicken toys through
Amazon dot com, go to "Toys and Games" section and search for "chicken" or "Hen" or "Rooster", they had a fair amount of stuff, "Flopsy Rooster" is really cute, and had a plush Momma Hen with peep under her. Also had a couple of the ones from Audobon (sp?) that make chicken noises.. Oh, and "Webkinz" has a chicken, too..
I just went to look at the tags on all her plush chickens to get more specific "brand" info, but forgot that she made me cut all the tags off because "real chickens don't have words on them!"
There are photos of her chicken party on my other thread, I don't know how to make a link to it, but it was under "Where are You? Where am I?" message board, title was "chicken encounter wanted for my chic-a-holic daughter, Pgh PA" (something like that)... Photos are near the end of the thread
Edited to add: Ok, don't know if this worked but here is an attept to add a link:
https://www.backyardchickens.com/forum/viewtopic.php?id=103268