Hanging lights on branches. Go natural with a fat branch and hang a combination of ornaments and candles attached with wire. Use twine or strong fishing wire to suspend the branch from above. You might want to try hangers so as not to damage your ceiling.
Stones painted as strawberries when put around strawberry plants in the spring will keep birds from eating your ripened berries. Birds experience the stones first and will think the ripened berries are rocks.