I remember someone saying that Ikea had decent speaker stands at good prices.
If you want to DIY, there's lots of different ways. One good way would be to get 2 pieces of MDF (one as a base, one where the speaker will sit), and for the piece connecting them, get sonotube (the stuff that's a form for concrete), and use that as a middle.
Fill it with sand and enjoy a very damped, very expensive otherwise, speaker stand
