I don't know if this craze is at just my kid's school, or everywhere at the moment. Lots of children began school this year with these type of pencil cases from either "Smash" or "Smiggles". Bec of course wanted to make her own custom made one!
We bought some 35cm zips in pastel colours from Textile Traders this week (they had a 20-50% off sale). It took 12 zips altogether (2 zips of each colour), but you could make it as long or wide, or as many colours as you wish. Sewed them all together to make 2 sides (6 on each). With the right sides together, she sewed all around the edges to seal it all up. The sides were the trickiest part because of the zipper ends being a bit bulky. She sewed some bias-binding down the side seams where the ends of the zippers were for strength. Turned it out, and there you have a Zippity Pencil Case! It can be opened from any of the zips.
Well done, Bec!