Reddit reviews Glass Vials, 1/2 Dram, Pack of 12

I use the tiny little 5/8 dram vials. It fits in the little coin pocket on jeans.

Edit: maybe 1/2 dram, these https://www.amazon.com/Glass-Vials-Dram-Pack-12/dp/B008IRT7SI/ref=sr_1_8?ie=UTF8&qid=1485304947&sr=8-8&keywords=small+glass+vial

O ya for sure I know what you're saying now. I've used little glass vials for that type of thing. Like these..(sorry I Dont know how to add a link or if you can on a cell phone)

http://www.amazon.com/gp/aw/d/B008IRT7SI/ref=mp_s_a_1_3?qid=1395633412&sr=1-3&pi=SY200_QL40

Hero of Time

A small, plastic vial like this:

https://www.amazon.com/Glass-Vials-Dram-Pack-12/dp/B008IRT7SI/ref=mp_s_a_1_17?keywords=vial&qid=1556063835&s=gateway&sr=8-17

Also, your friend probably used the pen to catch the smoke coming off of a heated tin foil bowl (not connected like a pipe, you put the pen in your mouth and aim the other side over the meth/other drugs).