Cannabis and other psychedelics are wonderful tools to use in conjunction with meditation. The key is to know how you wish to incorporate these tools within your practice and methods. The possibilities are only limited by your own imagination.
The Kashtray is an ashtray made specifically for people who smoke weed. The ceramic base is easy to clean and the metal cleaning pin effectively cleans out even the most stubborn ash. Ten stoner gifts at: http://blog.kashtray.com/2012/10/ten-stoner-gifts-under-20.html