i always got my stuff from
www.iamshaman.com and
www.bouncingbearbotanicals.com , the later of which has those frogs you can lick and get fucked up on :O those sites have pure 20x extractsof kratom for a pretty reasonable deal.
you should try ayahausca/yage (they dont sell it on the shaman site now) or san pedro :O although they aren't nearly as casual as kratom probably. ive amanita muscaria and its alright. Like a mild shroom experience, or a shroom experience with more of the euphoric rather than hallucinagenic aspects. If you're looking for a euphoric, sedative type of effect that might be up your alley