I got one of those Kyjen Tail Teasers yesterday and Finley just loves it. https://shop.kyjen.com/tail-teaser-with-refill.html $15 on Amazon He loves to chase that furry little thing. He jumps at it and sometimes he gives a single bark if it's a bit too elusive, lol. Really gives him a workout too! Probably could have made something similar for cheaper but I figured this was designed to be safe and strong enough for dogs. It comes with 2 "critters" that you can put on the end of the rope. 1 thing that sucks is that 1 replacement "critter" is $5 and there's really not that much to them. basically a furry stuffed animal shell, a squeaker (which already quit squeaking in the one I'm currently using, and something to make a rattling sound. I'll probably find something else to use once the 2 that come with it "die", especially at that price. I also taught Finley how to roll over and shake. He's funny because ever since I taught him roll over, when I tell him to lay down, he wants to roll over. I suspect it's so he can get a treat, lol.