This is just a basic laptop stand that I made in about 30-45 minutes. It's a super cheap build, and is suprisingly strong.
The tools needed are:
An exacto knife
A tape measure (optional)
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Step 1: Measuring
This is the most important step. If you get your measurements wrong, the whole thing will be messed up.
Basically, measure from the front to the back and from side to side, making sure that there's enough room for each piece to connect. Choose a path that doesn't have anything that will keep it from sitting level.
Step 2: Cutting
Once you have made your measurements, you need to cut rectangles that are the right length. Then, choose the amount of angle that you want, use your ruler to trace lines on your front-to-back pieces (the smaller ones), and cut them with your knife. Then take your longer pieces, and trace a line on one that is as tall as the taller side of your angled pieces, and one that is as tall as the shorter end. Cut them with your knife, and you have your basic pieces.
DO NOT THROW AWAY THE SCRAP PIECES!!!!!! THEY WILL BE NEEDED LATER!!
Note: At this point, you probably want to cut out some air holes in the sides and the back (the taller straight piece). I forgot to do mine and had to do them at the very end.
Step 3: Basic Taping
In this step, you just need to tape the pieces together in a rectangle. Make sure that you see where your pieces need to sit to come together before you start taping.
Step 4: Finishing Touches
This is your final step. Take some of the scraps that you kept, and choose one that is taller than the back. To measure your corner pieces, place the scrap over top of the chosen corner at the angle that you want to put it at. Mark where to cut it so that the length is right. Now that you can fit the piece in, mark on each side where the top of the piece it is touching is. Then, trace a line with your ruler from one mark to the other. It should be at a slight angle. Now, just put some tape on and stick it in there. Once you've done all four corners, it will be strong enough to support your laptop. Just put some tape on the outside of the corners, and it's finished.
If you don't want yours to look as homemade as mine, you could paint it or something. I just didn't have any paint on hand.
Note: It does slip around a little bit. There are many solutions for this. You could use hockey tape if you don't care about looks, or you could use little felt pads and cut them down to size.