an old towel you can fold in half or into a third (like I did), make sure you use one that will look ok in your living room if you plan on hanging it in plain sight
some zpagetti yarn or other yarn that is strong enough to hold the whole thing (including your cat) up
a crochet hook
a pair of scissors (a knife is optional)
a big comb for making the tassels, but you could just as easily use your hands
elastic bands for the tassels
a coffee table you can hang the hammock from
if you can’t attach the hammock to something underneath the table, you will have to put 4 sufficiently strong hooks into the bottom of your table or into the sides of its legs