You can get some nice toys online from the hay experts such as wood rolls, gnaw stones, willow rings and vineballs or buy them from P@H. Also toilet rolls filled with hay and veg (if she is veg weaned) go down a treat. Mine also really enjoy cardboard boxes with holes in them and towels they can burrow under.
What size is the cage she is in?
An hour really isn't enough time for her to exercise, she should be having an absolute minimum of 4 hours a day but preferably 6-8 hours. I put my buns out at 9 or 10 and bring them back in between 4 and 6 usually.