Suggestions what to pair with a HoneyDripper

[billstein]

Hi all,

Getting ready to box a Honeydripper and don't feel like shoe horning it into a small enclosure, but the 1590bb leaves me enough room to fit another small board in. Maybe a fuzz to give it some real growl.
Anybody have any suggestions? Anything you've found to work well with this circuit?

Thanks in advance.