These are one of the easiest crafts I have done. Here is what you need:
Solar lights from Dollar Tree
Fish bowls or sugar containers from Dollar Tree (or any glass container that the lights will fit into)
Glass pebbles from Dollar Tree
Take the stick off of the solar lights. Put the glass pebbles in the glass container. These are to hold the light in place as well as lift it up if you have a deep container. Finally place the light into the container with the flat solar side up. I didn't place pebbles in the sugar container at first. I wanted the light to be lifted up to be level with the top of the container and thats when I tried the glass pebbles later.