Here's a low cost DIY lighting solution for some mood lighting using a gutted out foam cube, LED lighting and solar panel pulled from one of those cheap solar path lights available nearly anywhere these days. Throw in a cutoff circuit and a power supply and the the results are a soft, diffused mood light rechargeable during the day...
I suppose this could be called a "night light" and would also probably be good lighting for parties if you're on a budget.
What I decided to do instead was to place the LED assembly inside of a light diffusing foam cube that I bought some time ago, and had in my garage apparently just for the occasion! A 3/4 inch hole was drilled partially through the cube with a paddle bit, then vacuumed out to get rid of excess material. The components, including the LED, cutoff circuit, and power supply were stuffed into it, then the photovoltaic cell was pushed down on top. The cube was just soft enough that with a firm press it could be seated level on it's own indention. Glue could be used as well to secure everything, but I might swap out the LED or something eventually.
DIY inventor, Jeremy Cook, goes onto share an Amazon resource for LED lighting parts, alongside the video below showing how his Glow Cube works: