You'll need fabric, string and any embellishments you think would be pretty.
Start by cutting a circle of fabric. Decide what size yo-yo you want then draw a circle twice as big plus 1/2". I'd like a 2" yo-yo so I'll use my compass and make a 4 1/2" circle. If you're cutting several yo-yo's you can make a template out of cardboard and just trace around it.
(This is my work table, please excuse the scratches)
Thread the needle and double the thread (pull the end you put through the eye of the needle down to the end you're going to cut). Give yourself a length of about 18" of thread.
Flip the circle so the wrong side of the fabric is facing you. Turn the edge over 1/4" and start sewing it in place. You'll want to use a wide stitch, maybe every 1/4".
Continue all the way around the circle.
Pull snug and carefully tie a knot in the string. Be careful to not pull so tight that you break the string.
Push the center down and start pulling the sides out so that the yo-yo will lie flat. (Take it from a puffy pouch to a flat disc.)
Trim off your string. That's it, a completed yo-yo!
I'm going to add a couple 4th of July embellishments to mine. I took one of the metallic shreds (tinsel) and folded it in half three times and tied it in the center with string.
Then sewed it in place with a pearl, snipped the ends and added a little curl (using scissors just like curling ribbon). Hot glued it to a napkin ring and now I have a fun, festive napkin ring for the 4th!
Have a happy day:@)