The cloth covered balls are available in uk from;
http://www.equinewhispers.co.uk/horsetoysandtools.html Ofeig likes her big orange spacehopper. It has the advantage of two 'handles' so its easy to carry. Though she might just bite one off and it will then dissappear quite quickly. http://www.youtube.com/watch?v=BeuHH67vzuQ She almost has the courage to go after it on her own eventually. Sue UK