I like making the inlaid ones, they're quite easy to do, but look impressive :) If you're interested in tiles, buttons, pendants etc, I do have a very reasonably priced (cheap!) Polymer Clay e-book which shows my very simple method for making nice, even flat polymer clay. And how to do it without expensive tools, too!
I made a bright patchy piece of felt last week, mostly Merino, but with some strips of silk and gauze:
I thought I'd go a few steps brighter and made a stripey piece with vivid merino shades and gave it some sparkle with dyed trilobal nylon, milk, viscose, rose fibre and bamboo:
I prefer the colours on the right hand side and prefer the back even more: