This is a DIY wedding favors/gifts which me and my wife made for our wedding - We made perspex (Acrylite , Plexiglas... It has many names) coasters. On the coasters we laser-cut our names, and laser-engraved the Wedding date and a nice icon we chose. The twist was cutting a place for a CR3202 battery and a 3mm led, which when turned on, lights the entire coaster, and makes the cut and engraved parts glow. A movie is worth a thousand words (times the frames) so take a look:
https://www.youtube.com/watch?v=BSU5SU23Z20