I had spring like device screwed into a tree that you could screw a cob of corn onto. Was great fun watching the squirrels go for a ride until one of them figured out how to steal the whole darn contraption!!
We re-hung bird feeders, which we have off of our deck, separate from the squirrel feeders. The squirrels came up & stole the bird ‘cage’ plus the brick of bird food. LOL! What can you do but enjoy their cleverness. :-)