I've made a number of cat toys over the years for friends and family as well as my crew. The ones that the cats like the best are the ones I've spent the absolute least amount of time on. Simple tube with just nip and fluff, oh yes, that's perfect. It is what I refer to as a "kicky toy". I've made ones with cute quilting fabric where the finished size is 6" x 1.5", and those were incredibly popular. I also used some old jeans from my father and cut them down to make randomly sized, but larger kicky toys - 6-8" x ~3", They grab and just bunny kick the heck out of all of the sizes. All of my other fancy efforts live at the bottom of toy boxes around the country, never to be seen again. Right now one of my cats is sleeping in a cardboard box instead of on the bed I made him, they're difficult creatures.