Surely you can do a lot with simple DIY projects and there are plenty of tips out there.
If you look at something ready made and only for macro, my son had a good look with this (Or a similar type) kit:
LINK
specially for picturing things you might sell on ebay or likewise.
And if already you have access to some source of light and so on, you may look at this much cheaper alternative:
LINK
Its really not that difficult to make a setup like that with cardboard box and simple papers, if you know what you are doing.
So get either creative or spend a few box and you should probably have what you're look for.