H/8 - 5.00MM Hook
1 skein Lion Brand Mandala or other yarn cake
Since the fit isn't important for this scarf, the gauge isn't either. If you want a wider/shorter scarf, use a bigger hook and vice versa.
To make this scarf I just followed the chart, provided by MyPicot, exactly. As in, chain 29, 4 double crochets in the 4th chain from the hook and so on. MyPicot also provides a written out pattern accompanied by pictures here.
I ended up with a 64"(163cm) x 4"(10cm) rainbow scarf just in time for August heat!
Keeping the scarf skinny causes it to naturally roll up on itself, which is pretty cool. I love how this turned out and I hope you do too! Let me know your thoughts in the comments.