I am a fish - 25-4-2003 at 12:09
Certain interesting chemicals can be bought from mineralogy suppliers.
For example, many semi-metals such as arsenic, antimony, bismuth, selenium and silicon are available in elemental form.
Of course the purity will be variable and the samples would need grinding up. However this could be a useful source, especially for people who like
ticking off boxes on their periodic table. 
Chris
Madog - 25-4-2003 at 19:59
cool, back when i was starting this is how i got my little bit of sulfur
a_bab - 25-4-2003 at 22:59
The best periodic system site I ever saw: Here. It contains lots of pics, stories, ways to get several elments (did you know that there are Nb and Zr coins ?), and even a story about a
sodium party (he bought form e-bay 3,5 lb of Na and played with it in water. Up to 180 grams chunks ! With movies, pics, etc: Sodium party