Do ya wanna build a stab-stick?

While he waited he began to observe the glowing rocks. He could try breaking them off with his teeth, or maybe smashing them with a rock? Hmm His eyes cast about finally finding a likely tool. It was wedge shaped, and with a bit of adjustment might even make a good axe! Arne found a flat rock, there seemed to be plenty of those around here, and began to chip away at the stone to leave it with a sharp edge. When he had fashioned it to the shape he wanted, he used the new axe head to chisel out a notch in what would become it’s handle. There were also some chips that came away that would be useful for ordinary arrow heads, and while he, himself couldn’t use a bow, it didn’t mean he couldn’t use them for trade, so he set to wrapping the smaller heads onto the narrow sticks by the throbbing light of the crystals while he continued to wait.
A voice came to him then, asking what he was doing. He turned with a smile and a wave of his tail. “I wanna try and make some of these crystals into tools, like spears and arrows and stuff. I wonder if they’ll keep glowing if I break them off?” He swept the chips that would make good arrow heads into a pile, hoisting his new axe up with his jaws, which were already parted wide in a smile. No time like the present to try, right?

"speech".