syntheses? Not many using just household items would be my guess. Of course, extractions are another world all together. Hooray, plants! i do know that if you use the right (usually food-grade) teks and take your time, you can get good DMT and good Mescaline using just vinegar, edible lime (CaOH) and d-limonene. i believe you can also get good bufotenine using these (or similar items) along with things like Epsom Salts and acetone, so though household, not food grade. i actually don't know much. i'll bet there are a bunch more out there . . . Peace & Love, Spicey Cat, Purrr!
Google "shake and bake". Worst case scenario the hospital will give you strong opiates when you blow yourself up.
Actually, it's a simple matter to synthesize DL Amphetamine from more-or-less household chemicals. Which means that various other PEA's can't be that impossible.