This may not quite be what you're looking for in terms of traditional "test boosters" from pro-hormone shops, but both mushrooms and grape seed extract have been shown to be aromatase inhibitors which should indirectly boost testosterone by attenuating estradiol and its negative feedback effect on the HPTA.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3074486/
http://hwmaint.cancerres.aacrjournals.org/cgi/content/full/66/11/5960#SEC3
Unfortunately I can't tease out a good dosage/effect from the data in the articles, maybe someone with proper training could chime in here (hint hint, GSRacer...

) I'd love to see some human studies on these compounds which should be cheap and basically risk-free but there's no incentive for any drug companies to lift a finger for natural non-patentable stuff like this.
My idea for a cool at-home experiment:
1) Let endogenous hormone levels drift to natural state (~1 mo. post-PCT?)
2) Female Hormone Panel every week to ensure stable levels
3) Start dosing one of the compounds (1 lb mushrooms/day, or 300 mg/day GSE)
4) Continue weekly Female Hormone Panel to see how levels change over the next month or so
This data would be excellent for the subject, and reasonably useful as quasi-science for the rest of us. Any takers?