Marcellus Wallace’s briefcase

I’m sending my friend Jon Marcellus Wallace’s briefcase in the mail, but I’m not going to post this entry until after the briefcase has arrived. Here’s how I made did it.

bc 1

Buy an ordinary briefcase at a second hand store.

bc 2

Gut the lid.


Line the lid with 6 layers of gold cellophane. Lolarusa suggests omitting the cellophane, but I think it adds reflected color. It’s a toss up on whether this part is effective.

bc 4

Battery pack w/eight AA batteries, some wire, 4 super bright LED bulbs, and 4 miniature sockets. When wiring, please note that the positive contact on a bulb and the positive contact on a socket is at the bottom, the negative contact for a bulb and socket is at the sides where the threads/grooves are.  Oh, and buy a refrigerator switch, not pictured. The switch that turns the light bulb on when you open the fridge door. Costs around 5 USD.

bc 5

Attach sockets to some sort of base. I used skewers & twist ties.

bc 6

Lay out the contents of Marcellus Wallace’s briefcase. Secure the battery pack with velcro. Secure the base with tape.

bc 7

Cut 3 lengths of red and 3 lengths of black wire, longer than you need them. Coil the wire around a pencil. The coil will produce tension, making electrical tape & solder unnecessary.

bc 8

Connect all bulbs, positive to positive, negative to negative.

bc 9

Make 4 gold cellophane socks to cover the bulbs. This adds the right color and stops you from blinding the recipient.


Connect to battery pack to test.

bc 11 switch detail

Connect the refrigerator switch in this manner (thank you wikihow). Red from positive socket to one post on the switch (doesn’t matter which one), other post on switch to positive power post, and finally negative power post to negative socket. Follow this illustration exactly to avoid a short circuit.

bc 12

Here is my fridge switch, tucked into the upper right corner of the briefcase, using velcro as adhesive. When the lid drops the plunger is depressed and the circuit is broken (the lights go off). I added the shims below the switch to make the lights turn on just as the lid is opened. Good electrical timing makes this prop work.

bc 10

Set the combination. To open the lock in the image above you’d push the latch to the right. While in the open position push the latch to the left and hold. Turn the wheels to any number you like & let go. That’s your new combination.

bc 14

Open Marcellus Wallace’s briefcase at your own risk.


more Curiosities

~ by Rick on March 2, 2014.

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