Hi Linda,

How did you go? Have you found out much info?
Some of the materials you may like to use are]

Hemp - very absorbant
Bamboo - very very absorbant, but also takes longer to dry
Microfibre - very very absorbant but prone to compression leaks to best to team it with one of the above

PUL - This is a waterproof breathable material. Actually is a laminate on the material. Order it online
Polar Fleece - You can use a double layer of this to get a waterproof cover (not 100% but works)
Micro fleece - used for liners or the inner layer (against skin) to help baby feel dry

BubbaEarth is probably the best place to start for material in stock. There are also lots of free patterns available online. Pretty sure Nappycino has links to most in the DYI threads under sewing.

Good luck!