If you have knitted or crocheted something, but you don't want it anymore, you can reuse its yarn, this site shows you step by step how to do it. This is even a good idea for second hand bought knitted or crochet sweaters. Here is the link: http://www.thechillydog.com/2018/01/how-to-reuse-frogged-yarn.html
Make these pretend lanterns to decorate your house for Christmas or for a party. They are easy to make and ideal for a craft for children. You can also recycle gift wrapping paper.
Make this cardboard box airplane for your young pilots to fly, the craft is for a big box so that child can fit in, but you can make a smaller version to put toy people in. An easy idea to recycle cardboard boxes. The site have step by step instructions and photos. Here is the link: http://www.repeatcrafterme.com/2014/05/cardboard-box-airplane.html
A great idea on how to hang your things on the wall to organize them. The site has instructions on how to make these organizers, use your scraps of yarns and recycle jars and tins to make these organizers. Here is the link: http://www.popsdemilk.com/hanging-container-organisation/