Picture of Halloween Inflatable with a Computer Fan
Do you have an old computer sitting around? Do you have trash bags? Do you have leaves bags for Halloween? Do you have some Scotch tape?

Your computer may have a fan in it which you can use to inflate a prop of your design. The purpose of this instructable is to help guide you to make the basics. After that you can set your imagination go wild.

This is my first instrucable!
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Step 1: Items you will need.

Picture of Items you will need.
halloween 010.JPG
1.12v Computer Fan.
2.12v AC to DC power converter adapter
3. A switch. This will be used to turn on/off the device
4. Trash bags. Colorful to your needs. Or season leaf trash bags.
5. Scotch tape. Clear tape which you normally use for taping up gifts.

Step 2: Electrical Setup Diagram

Picture of Electrical Setup Diagram
The way I build this is to permanently connect the fan, switch, and the 12v AC/DC power converter. I spliced all the wires, and taped them up with electrical tape. See Image for a diagram.

***Note: Make sure you make a dry run and test it before sealing or taping the entire thing.

Step 3: Build your design

Picture of Build your design
When I first started this. I decided to use a plain trash bag. I cut out what I did not wanted and kept the bag its self.

For this instructable, I will be using a leaf trash bag. This kept it simple. I decided to tape them together to create a tall standing inflatable.

Using scotch tape works great on trash bags.

Step 4: Putting it all together

Picture of Putting it all together
Computer Power Supply.jpg
This is the best and most complicated step....HeeHee Putting it all together.

What I used, was a computer supply for my project. The one I had, the fan was on top. I also reused the power switch it already had to make the power on/off switch. You may have to look for this item some where else, or buy it; since a lot more computers do not have this setup any more. But if you find yourself with one, you are in luck. You can use the power supply as base.
timmi5 years ago
 Hi, this is really cool!!

This could be used for christmas as well and stick a light inside it to make it glow at night. You could paint it like a chimney and have santa going down the chimney!!!
You should Rename it to "How to make a Wacky Waving Inflatable Arm Flailing Tube Man!"
If it leans too much you could try adding another fan for more air flow.\, and just wire it in sync with the other one. couldnt hurt could it... and thanks for the great instructabele, i'll deffinetly try this one out
6monkeyRS (author)  dementeddingo6 years ago
You are correct. Another fan did the trick. I am working to make another one, and adding light inside to make it glow during the night.
yes, i was also thinking about adding lights to mine, i started making it today as i have a heap of fans laying aroundfrom when i pulled apart a heap of computers. At first i thought about LED's but i dont think they will be bright enough, so maybe afew small light sockets that take 12v bulbs(like a car tail light or something). that way you could wire it to the existing power suply, and include another swith to control lights, or maybe even a dimmer! With mine i have used a old piece of MDF that i cut into a circle, then used a hole saw to cut a hole for the fan. I'll screw the fan on and tape the bag to the base, and have to switch mounted on the MDF, which is lifted off the ground by some short legs to allow air flow.