What I love about this prank is, well... everything. It is very simplistic, cost little to nothing, provides a great scare, and you can not get in trouble for doing it! It consists of telling someone you found a rattlesnake egg and it in the folder, then they of course open it and a very loud rattling noise starts, scaring them very good. And yes I know, rattlesnakes give birth to live young, but most people don't know that or don't think about that because they just want to see it! I have gotten my teachers, friends, and parents with it and it always ends in a good laugh... of course after the screaming and what not.

Step 1: Materials

Here are the materials needed to do this prank:

Clothes Hanger (Metal)
A large washer or some other type of ring with a hole in the center (Mine is a Hard Drive Disk Spacer)
Rubber bands (Probably a lot because you will break a few until you gt used to how much to tighten it)
A manila envelope
A magic maker (not needed, but is a good add-on)
Wire Cutter
Pliers
Tape Measure

Step 2: Close Hanger

Take your clothes hanger and your envelope and just cut the top off of the clothes hanger and discard the top. Then, Straighten the hanger. Now bend the hanger at a 90 degree angle, 6 inches down. Now find the width of your envelope. Mine is 6". Subtract a half and inch from that and you have the length that the middle of your clothes hanger should be. After you do this bend at 5.5" (for me), a 90 degree angle. Now you will have a lot of clothes hanger left. Just cut that to 6" from the last bend. Now you should have a "U" shaped clothes hanger.

Step 3: Curl Ends

This step is simple. Just curl the ends of the clothes hanger. This curl should come about the entire way around till it is touching the hanger again. Also, start curling from 1" down the hanger. This should be done for each side. And you want these to be bent towards the outside.

Step 4: More Bending

Now take the hanger and bend the two loops that you just made at about a 45 degree angle towards the inside, simple as that.

Step 5: The Washer

Now you need the hanger piece, 4 rubber bands, the washer or whatever you chose, and the envelope. Begin by sliding the hanger into the envelope as shown in the picture. Get four rubber bands. Now take one rubber band at a time and attach them to the washer like shown in the picture (2 on each side) . After all are attached, loop two of the rubber bands onto one of the loops on the hanger. Repeat for the other side. Now check the picture to see if it looks like mine. If it does, twist the washer enough to make it tight. Now put everything that you have just done into the envelope and you are done. Just for appearance, write rattlesnake egg on the folder.

Step 6: Execution

First off, practice this a few times on yourself so you know how tight to make the rubber bands and to make sure that the noise is loud enough. It is very important on how you present this to someone. Go up to them and ask them if they would like to see a rattlesnake egg you found earlier. When they say yes, give them the envelope and let them open it. It should make a very loud "rattling" noise if done properly. This is sure to scare your victim and usually it will end in a good laugh especially if you explain to them that rattlesnakes give birth to live young :P