I don't know about your kids, but my daughter is constantly wrapping things around her waist and coming up with the craziest knots ever to secure her 'belt' on. She's asked for a belt several times, so here is what I came up with.
A velcro belt!
And here's how it's made:
You'll need a long scrap of fabric,
and a sewing machine.
Measure around your child's waist and add five inches. One inch will go to seam allowance, and three will be for flexibility in length.
Make the fabric 6" tall. The finished belt will be a little more than 2" high.
Fold your fabric in half length-wise (right-sides together) and sew around two sides, about 1" from the edge.
Snip off corners and then turn right-side out.
I don't have a photo of this next step, just tuck in the open end about 1/2" and sew it closed about 1/4" from the folded edge. Continue topstitching around the entire belt 1/4" from the edge.
Wrap the belt around your child's waist and mark with a pencil where you would like the velcro. Sew on the velcro by stitching around the sides. Make sure you get the velcro in the right places so that they face the correct sides.
Now is the fun part! Create your logo using felt. Stitch the logo design onto the felt background before sewing the finished logo onto your belt. To attach the logo just stitch around the edges.
And voila! You're done!
An easy on and off belt for a toddler to use :)