I received one of these as a gift last year, and figured how hard would it be to make one. It was not as easy as I thought but just about anyone can make it with a little caution and safety measures.
Use a glass building block to make a decoration, by drilling a hole and inserting Christmas lights, then add some decorations on the outside of the block.
Step 1: Prepare to drill the glass block.
Items you will need for this step include:
8 in X 8 in X 3 in glass block (Home Depot)
glass and tile drill bit 1/2 inch
Drill press preferably
and Eye protection
Step 2: Drill Glass Block
Take it nice and slow with this step. The glass can and will shatter if not careful. Make sure that the bit is kept cool by dripping or spraying water on the drill bit as you are drilling. If the glass bock is not clamped, use a towel and glove to hold the block down. Don't want anyone getting hurt.
Step 3: Clean the inside of the block.
The inside of the block will have a lot of glass dust inside once you have finished drilling. It will look dirty, don't worry it will come clean. First use a vacuum to get as much of the dust out as possible. There will be a little bit of dust still clinging to the inside of the block. Use a air-compressor to blow air into the hole. CAUTION: do not allow air pressure to build up inside of the block, IT WILL EXPLODE. That is why I do not have a picture of myself using the air-compressor.
Make sure that you have on gloves in this step as the glass dust escaping the little hole will feel like a sand blaster on your hand.
Step 4: Insert lights into block.
Use a 50 count light strand, not the sting together kind as you won't be able to insert the plug at the end of the sting. These are hard to find, I found mine at a local CVS store.