Fermata do Brasil Ltd. has a useful website, in English as well as Portugues, that may be of interest to Villa-Lobos fans. They publish a number of Villa-Lobos scores for piano, and also sell the kinds of instruments you see in VL orchestral scores: castanholas, chocalhos, conjuntos de percussao, pratos de mao, reco-recos, and many others.

Speaking of which, here's a fabulous resource: the web article "Percussões do Brasil", from the site A Biblioteca Virtual do estudante brasileiro. The site is available in English as well.

There are pictures and MP3 files of the sounds of many Brazilian instruments. I like the "Afoxé and Xequerê", and the Reco-Reco.