Light Bulb Dummy Load ?

I bought one of these:

Unlike the ceramic lamp holder I used for my light bulb dummy load for the HW-16, this is plastic.  It's also "keyless" which means no switch:

I'm thinking of mounting it in a coffee can.  I'll mount the enlarger diffuser on top of the can and use it as a light source for my negative to positive idea:

https://wb9kzy.blogspot.com/2025/09/lightbox.html

The slanted top lightbox was kinda awkward as a light source.

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm