Just bought these in a lot yosterday, they both seem to be from that area (the club(spear?) and blowgun (although this could be fake!).
But the club is HUUUGE just under 2 meters, made of palmwood, the plug in the bottom is someone's stupid attempt to mount it i think. anyone have a tribe? or area?
As for the blowgun, tourist piece perhaps? made out of the same wood (palmwood) and i like the look of it, pretty complex work! someone tried to keep it all together by sticking band-aids on it....

(look at the pictures )
This one could be fake, cuz the thatch-work doesn't look anything like the rest.
As for history off course i have none, but it was cheap; purchased in the Netherlands