What a beautiful kittycat you saved. As a volunteer for many years of no kill rescues I appreciate you adopting Rosie because it makes room for another cat to get to safety until they find their forever home. I hope you enjoy many happy healthy years together - please note though that any string, wool, twist ties, elastics, dental floss, and the like are VERY dangerous for cats to play with. Once it gets on their tongue they cannot stop it from going down their throat and it can get in their bladder or intestines and cause serious problems or be fatal. I just took my cat to the vet because I had forgotten to zip my work bag shut and he took the elastic off my book (I put it there to keep in my bookmark and also because I always have papers in the front cover) - well my poor kitty went through two days of tests and a stay in intensive care and of course it was quite $$$$ (not complaining - it is part of having a furry family). From here on in, I keep my book in a plastic bag, no more elastics. I am a knitter but all my projects are in zipped bags. All that to say, better to use sponge balls, fishing poles with feathers (supervised) and other safer toys.