Too bad on the Atlatl,unfortunately this is the way most of them break. At least that's the case on the 6-7 I have found. One of these days I'm bound to find a "whole" one. Hunting the plow zones tends to be what you get. The other piece I'm not sure, the one end looks like it has a bit end. I found a piece similar, in size also with a bit end and a blunt end ( not broken) and I believe some one told me that it was a chisel? Nice pieces anyway, good save and CONGRATS!