Use a poster board, any kind of squared wood for bottom with edges & Christmas lights; cut any size holes in posterboard; Christmas lights sit on bottom of square; shape the poster board & use a thin line of hot glue to hold them together = nightlight.
Here Are 25 Easy Handmade Home Craft Ideas: Part 1 -
What to do -Blow up pilates ball & wrap in plastic to protect against wallpaper glue. -Mix the wallpaper glue according to package. -Dip paper cord in glue & wrap around ball however you like (leave a hole in top for lamp bulb). -Let dry for 24 hours. -Deflate pilates ball & pull out through hole.