How to Make an Easy Bedroom Trap

Bucket
Marbles
String
Strong tape

Tape the sting to a nearby wall. Then tie the other end to the door knob but before you tie it put the bucket handle on the string. Place the bucket on the edge of a surface put all the marbles in the bucket

When someone opens the door the bucket will fall on the zip-line and hit the person in the legs it also make a lot of noise