A weenotion, a HL bedbug and a goodmama cause I've never tried them, a truckload of disana tie-on nappies, and lots of yarn and interlock to make wool covers! Ok, maybe that's a bit more than £100... Can I add a few wetbags too though?
A nappy from here http://hyenacart.com/stores/TheClothCanoe/ Gen. has a custom slot going atm too, she's only just started up again after moving and renovating her house. Her bv csp is my fav. and her fitteds were fantastic on my boys.
I would get 2 custom WNNN, some little comfort economy bamboo with code works out very cheap (i had the real nappy week kit and was totally floored by them) a custom pair of longies and some bundled wipes. Maybe some shea butter cubes and silk liners if I had any money left over.