When I saw this item in Harbor Freight I instantly thought GlowForge project. It was $8
I am posting my purchase because there are so many incredibly beyond talented artists here at the community. Someone would have an idea on how to incorporate these lights with a GF project.
I got similar multi colored lights a few years back that work on a solar cell so with enough light they charge otherwise in the dark they shine. I keep them on a window sill and they usually lose all charge by midnight or a bit after but work for over a year on replaceable rechargeable batteries.
I have some “yard lights” like that, two pointing at my flag near my front door. Unfortunately, they keep it lit for hours after dark in summer, but don’t get enough sunlight to last more than an hour or two in winter. Still, they’ve lasted 4 years so far…