Henry‘s mama has asked friends to publicize the scholarship fund his family has set up in his memory, which will pay for treatment for other addicted young people whose families could not otherwise afford it.  Henry’s guitar teacher wrote a lovely song in Henry’s honor; it is now available for download and he will donate all procees to the fund.  You may also donate directly.  You can read all about it on his mom’s blog. 
If you’ve been following Henry’s story via my blog and are interested in reading more about him, Katie’s friend and co-worker Shane Rhyne has compiled a list here of every blog post he has been able to find written after Henry’s death.