If I drop a zip-tie on the floor, my cat is ALL OVER it! haha
So, I made this 'lil toy for her because I knew she'd love it... and she does!
Her absolute favorite now in fact!
So... I picked up a cheap dollar store pack of zip ties, they are REALLY small though... like, the strip measures at about 1/16th" wide... weird little zip-ties... Regardless, they work great for this project.
The through-holes in this file are .070"
The cup for the head of the zip-ties to sink into is .180 dia X .180 deep.
You may need to digitally punch the holes bigger/ scale it up just a hair for zip-ties you'd find in a standard hardware store.
CAUTION; My cat is NOT the type to eat/swallow anything that is not food. If your cat is prone to swallow small bits of things, this is NOT a thingi for you!