This chainmail warskirt, for my LARPing hobby.
But if you are talking miniatures only, then I would order some more tanks from Germy’s 2mm line and some more tokens from Litko. Other than that, I don’t have any real mini needs at the moment. I just received a large (for me) order of 10mm ancient/medieval/fantasy figures from Irregular, for use with Age of Heroes, a free set of skirmish rules posted on Lead Adventure Forum.
Now Rhoderic has posed an interesting question – “if I was starting from scratch and had to make a viable project out of what I can buy for £100?” I have some definite ideas; sounds like a topic for a blog post!