I have an old laser point that I probably bought for $25 back in 2000 or earlier. I haven't used it in years, and found it wouldn't work. It has two 392 batteries. $5.00 each locally. I found that LR41s are the same, and tried them. I have about 10 for other purposes. Still didn't work. That seems odd. Bad laser? I do see a slight gash in the tube 1/2 the way down. The pointer is about 6" long and doubles as a pen.
I have a feeling that I can get laser pointers now for maybe $10. I'll know shortly when the stores open.