One of the easiest of scap projects is the humble crocheted yo-yo. I’ve always enjoyed these fun little circles of color and find them a terrific learning project for new crocheters. When worked in worsted weight yarn with a size I-9 (5.5mm) hook they use just under 2 yards of yarn each.
I make my Yo-yos by starting with an adjustable slip knot, then chain 4,
11 double crochet in the 4th chain from the hook,
Tighten the center of the stitches by pulling the beginning tail snug,
Insert hook in top of the beginning chain 4,
Slip Stitch to close round of stitches. Fasten off.
Weave in the beginning tail in the center. You can weave in the ending tail as well, or use it for sewing the yo-yos together. For my yo-yos I did weave in the ending tail, because I will be crocheting these yo-yos together.
To weave in the ending tail I like to insert my yarn needle thru the top of the chain stitch that I had slip stitched to.
Then I turn the yo-yo over and weave the tail thru the back bumps of that beginning chain and on around the center of the yo-yo. I pull this end gently when weaving it in so I don’t collapse the side of the yo-yo.
I trim off the excess yarn from the yo-yo and it is ready to join my other yo-yos. I will fill a bag with yo-yos until I have collected enough to make them into a project.
You can use yo-yos in any number of projects. My favorite is to make scarves with them. You can also make yo-yos in other yarns or threads. You will need to adjust the size hook you use to get a yo-yo fabric that you find pleasing.
Mamas2Hands 
Fun idea! Also, I greatly appreciate the details and photos about weaving in ends. Understandably, most instructions simply say “fasten off and weave in ends” with the understanding that we’ll manage to do it securely and invisibly. Thanks for showing us how with yo-yos!
Hi Liz,
Glad you liked the help with weaving in tails. It is one of those things that isn’t covered in patterns. My grandmother actually taught me how to weave in ends in embroidery when I was about 8 years-old, so I’ve always applied those same methods to my yarn projects. I hate my ends to poke back out, so I weave them in really well.