See http://allonestring.co.uk/hand/yarn/allonestring-crochete...

The link is to a pdf of patterns for four different shape/sizes of crocheted and felted bowls worked round and round from their bases:

• the smallest is about 6” (15cm) across and high, and has options for different style rims
• the next is about 8” (20cm) across and high
• the largest is about 8” (20cm) across and about 10” (22cm) high

• the fourth is a odd-ball and is done vertically with short rows

I used DK or aran weight wool or wool mixes so that they felted, with appropriate hook sizes.

Note that I’ve used British terminology!