Coil basket weaving methods // Paperphine Paper Raffia Bowl
So it's not completely relevant, but if you're desperate for tips on how to make something like this, please see my YouTube video. Alternatively you can also check out Ruth from Craft School Oz and her YouTube video using a needle, which might be easier if you're not into crochet! (It's also way more professional than mine!).
I wanted to see how far about 50m of raffia would go and I think it's actually a pretty good size. Crochet uses up more meterage too, so if you used a needle you'd get an even bigger bowl. I probably used about 80g of raffia because the core is quite thick.
Anyhow - some pics of a basket I made a little while back, using Paperphine paper raffia and natural raffia using easy crochet method: