Yeah i know what you mean by not worth the effort. it would take a lot of prep to do properly.

a similar idea which i thought about when i was younger.. which is probably less complex :
being lucid, holding an empty bottle to the sun..filling the bottle with sunlight ... then keeping that bottle, taking it with you, or teleporting to a dark place and opening the bottle, filling the dark room or place full of light. doing this would just be fun in the sense that its something that couldnt be done (of course) in reality