Diy Rabbit Bedding . Fresh branches from untreated apple trees. Over the years i’ve done all kinds of different things for bedding in my habitats. DIY house bunny litter box with hay feeder Bunny litter box, Litter from www.pinterest.com When you are making a diy rabbit nesting box, the dimension of the nesting box is not a matter here. As a pet owner, you would surely want to give only the best for your pet; You could place some bedding and hay inside the box.