Picture of How to Rig an Easy Booby Trap
I sometimes have problems with people in my family (mainly my sister) coming into my room uninvited and stealing things like movies and such. So I rigged up a simple but very effective booby trap based on a trap called the Tiger Trap (a type of dead fall) that was used by the Viet Cong in the Vietnam War. This booby trap is designed for doorways but can be adapted to just about anything. Please do not leave any rude comments, criticism is okay and questions are accepted and replied to as soon as I can.
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Step 1: Materials

Picture of Materials
1) Fishing Wire
2) One Plastic Tube or Container
3) One Empty Scotch Tape Spool
4) Copy Paper

Step 2: Tools

Picture of Tools
1) One Knife or Scissors
2) Clear Duct Tape

Step 3: Assembly

Picture of Assembly
Cylinders made.JPG
bottom cylinder set.JPG
cylinder set.JPG
spool set.JPG
First, cut out two one by one inch squares from the copy paper. Roll them both into cylinders and tape them. Tape one of the cylinder horizontally to the right hand lower side of the doorway about where you want the trip wire to go. Tape the other cylinder at the top right hand corner of the doorway vertically but angled slightly to the left (like the picture). Next, tape the scotch tape roll to the ceiling about three inches away from the wall (again look at the picture).

Step 4: Assembly (Continued)

Picture of Assembly (Continued)
container set.JPG
Cut a six inch section of fishing wire and tape one end to the base of the plastic container (try to find a container like mine, it works best). Tape the other end to the ceiling about four inches away from the scotch tape spool. Tape the end of your spool of fishing wire opposite your horizontal cylinder and measure out how much wire you need to pass through all the pieces and get to your container. Cut the wire and string it through your pieces and tape it to the plastic container. Pull the slack out of your wire to where the container is about tong the tape spool.

Note: I know this is hard to follow but bear with me and consult the pictures and diagram.
newt1234 months ago


this is a good one! :)

pewdiepie1 year ago
Yeah yah
fun12 years ago
awsome it works so could also put fun snaps in it so the people get a little fright,insted of using paper you could also use the bendy parts of the straws that way it will not chafe against the paper or rope. awsome moddel works so well :-):-):-)
kestoico2 years ago
empty toilet paper rolls work well too. so does the tubing from a hanger.

nice tiger trap....simple and effective.
rmacon2 years ago
I found that if you want a more permanent trap that can take weight instead of little paper tubes, for the bottom cylinder replace it with a staple that is partially inserted into the wall, remove the opposite end of the staple where the wire is resting on, bend it almost perpendicular to the wall and fold it in. And for the top one, insert a staple 2/3rds of the way into the wall. You can also staple the beginning of the trap, (The tripwire itself) to the wall as well, the triggering mechanism is the wire setting off the first bent staple, allowing the object to fall onto the target and for the trap to be reset too rather easiely instead of retaping and stuff.

The only problem is that it will not hit everyone, it depends on the length of fishing wire. If you are attempting to hit taller people, use less wire, or shorter people, use more.
rmacon rmacon2 years ago
If you tape the spol out far enough, the extra tape a couple inches ahead of the spool is not neccessary, it's only another thing to go wrong as well.
Hitman2273 years ago
I like it ill try this with my sister.
how does it drop it
Miscellaneous (author)  zipzapper8594 years ago
The trip wire is rigged through the pulleys to hold the container up. When the trip wire is released then the weight of what ever is in the container swings it down and drops the stuff in the container.
so the point where the end of the tripwire (the one opposite the containor) is attached can slip out?
striker1874 years ago
clever can't wait to try it
but it would be nice to suggest some possible substitutions for the cylinder

cut up pen tubes would probably work

thing 24 years ago
you should post a video of someone tripping it!
zexuan4 years ago
I have actually tried this before. Gave up halfway considering I was still a little kid then. What do you actually put inside the container? Can it hold up water?
Miscellaneous (author)  zexuan4 years ago
How could you be "a little kid then" if this has only been up for a month. Anyway, I put water in it when I set it and it worked perfect. Happy Hunting! :-)
as in i made something similar without before this guide was published
Miscellaneous (author)  zexuan4 years ago
Oh, that's cool.
try redoing the pics with regular string to make it more visable. nice though.
OK, next time I make an Instructable like this I'll use real string. Oh, and everyone can check out all my other Instructables on my profile page.
Ice Ghost5 years ago
Hey nice tiger trap!
Miscellaneous (author) 5 years ago
I hope that everyone likes this Instructable and I just want to say please no one "modify" my Instructable and publish it again just to have it as their own.