At playgroup we have been busy making our own nests.
Make up a mixture of non toxic PVA and water. Blow up a balloon, then dipping lengths of twine or wool into the mix, wind and twirl it around one end of the balloon. Leave it to dry.
When dry, weave fleece, feathers, raffia, wool, twigs, coconut fibre or any other natural bits through your nest.
I had also purchased some wooden birds from etsy. We coloured them in using beeswax crayons.
Then put them in the oven on around 120c for 15 minutes. Whilst they are still warm polish them with a soft cloth. This spread the colour around and evens it out.
I then lightly sanded the edges back to give a more softened natural look.