1. Use a hula hoop for the lasso. Make sure you secure the rope to the hoop.
2. Find some things in the garden that can be used as targets for the lasso like
soccer balls, old plant pots or wooden stumps.
3. You can make your branding iron from either a sponge or a potato on the end of a stick . Both will work great as long as you dip them into paint
4. Balloons or rubber gloves can be used instead of real cows for the corralling