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All you need is

An envelope

tape

scissors

and a party popper

glue (optional)

Step 1: The Popper

first get your popper and get your scissors and jab a hole in the top and pull the top out.

second get rid of the confetti

third cut down the edge to get rid of another peice of cardboard

now you should be able to see the ignition so slowly pull that out.

Step 2: The Envelope

now you can open the envelope and tape the ignition on the bottom of it.

then get your card and tape the string on it (so when the card is pulled BAMMMMMMMMMMMMMMMM!!!!!!!)

lastly tape the envelope tape or glue it back together!