These are easy to make, it just takes a little time cause you can't rush things.
You can use a drill to make these, but I have opted for my dremel, cause it is easier to make the holes nice and round (like it makes a difference)
You will need:
Empty Glass Bottles
a Dremel or other Rotary Tool
Christmas Lights (the bigger the bottle the more lights need to be on the string)
Step 1: Clean the Bottle
I used an A&W Cream Soda bottle. I am making this for my nephew and the ones I have seen made from wine bottles seemed a little inappropriate, even with the label removed. Clean the bottle and make sure it dries all the way before you start. If there is water left in it, the dust gets stuck to it, and is hard to wash out.
Step 2: PAINT
Spray with a thin coat of paint. The 2 picture use my Christmas colors of Krylon Raspberry and Emerald. Let them dry over night before you start drilling. I masked off a heart on the pink one before I started painting, but it's not really needed.
Step 3: Tape
To help start the hole, put some tape on the bottle where you are going to drill the hole. I used a sheet of sticker paper on the first, and learnt my lesson. The bigger the adhesive, the more the chance of paint being pulled off. I worked around this problem though, and learnt for the future, use a smaller piece. It's just enough to get it started, so it doesn't have to be much bigger that the bit.
Step 4: Choices of Bits
Above is a link to one of the sets I have bought. As the diamond bits get worn off, the bits don't work as well. This set is nice cause it's pretty cheap, and there are plenty of different styles. I start with the ball to get the hole started, then move to one with a point to break through, then use one of the longer ones to grid and make the hole bigger.