Build your own timer

Hey guys, it's PinkBunni!!
I'm going to teach you how to make your very own sand timer!

You will need:
Two small plastic bottles or containers (that can be cut, like a water bottle, etc.)
Clear tape (preferred)
Scissors
Cardboard or card stock
Sand, salt, sugar, etc

Steps:
1) Pour about 1 cup of sand into your plastic bottle (depending on the size of the bottle)
2) Use your bottles bottle top to trace a circle onto your card stock, card board and cut it out. It has to be the exact circumference of the opening. Cut out a tiny circle in the center of the card stock or cardboard.
3) Tape the circle over one of the openings of one of the bottles, but don't tape the hole in the center of the circle because that's where the sand has to come out.
4) Tape the second bottle on top of the first. Make sure the sand doesn't come out of the bottle.
5) Watch the sand flow from top to bottom.
 .... And your done!!!! :D

I hope you enjoyed!!!!
 Happy holidays!! c: