My friend Phyllis D. just finished knitting... a womb!
Didn't she do a wonderful job? And I might add that she used yarn left over from a beautiful sweater she knit me in 2000. If you would like to knit a womb, the instructions are on knitty.com:
I'm not sure what I'd do with a knitted womb. Perhaps knit a winkie to go with it? Nah, I think I'll just stick to socks, scarves and cardigans.