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I was shocked when I couldn't find a safety flag for the used Burley bike trailer I just bought, so I decided to make my own. It uses items I found at a local Ace Hardware store.

Step 1: Materials

For the flag itself, I used orange "Duck Tape" brand duct tape. It was a little pricey, at $6.99, but Safety Orange only came in a large roll...

For the pole, I found this "LintEater" 12 foot extension pole, which comes in four sections, and appears to be made of something like a flexible fiberglass. It's pretty pricey, at $29, but it was the only thing I could find that was semi-rigid, flexible, and strong. Most other materials that were readily available, such as wood dowels, would break too easily.

One big plus, is the fact that it breaks down into sections for easy transport.

(Upon further inspection, this pole is a little too bendy. Luckily, there are four sections, so I will likely use 2 two-section pairs, and tape them side-by-side.)

I'm sure there are better options out there, but I was limited by time, and an availability of open stores. If you can think of a better idea, please post it in the comments!

Step 2: Lay Out the Duct Tape

Tear off a number of strips of duct tape each one equal in length to twice the length of the flag you wish to end up with.

Lay the strips adhesive side up, overlapping one edge. Continue overlapping tape strips, in this manner, until the combined tape is equal to the desired width of your flag at the base of the triangle (you could, of course, modify as needed for whatever shape of flag you wish).

Step 3: Lay Flag Pole Onto Tape

Lay the top of your flag pole across the midpoint of your laid-out tape.

Step 4: Fold Tape Over

Now, you will, VERY CAREFULLY, fold the tape in half, wrapping it around the pole. Note: once the two adhesive sides of the tape touch, you will not be able to separate them, so take it slow. I suggest starting from the pole, and working outward from that point.

Step 5: Draw and Cut Out Your Flag

If you are wanting to achieve the traditional pennant design, you will want to measure the desired length (in my case 14"), and draw a line, parallel to the the flag pole (pen works well).

Measure the width of your flag (in my case, 11.5"), at this point, and place a mark at half this width (in my case, 5.75").

Complete the triangle shape by drawing lines connecting the top and bottom of the base of the flag to your midpoint mark, using a straight edge.

Cut along the two lines you just drew to create the pennant shape.

Step 6: Fin.

Admire your new flag!

Attach it to your bike trailer, etc., and have fun, in complete safety!

I'm sure there are better ways to do this, and I welcome your suggested improvements!

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