I did something similar with my duct tape. I took an old sears gift card and wrapped about four feet of duct tape around it lengthwise. It is flat and fits perfectly in my PSK. I also made another little roll with a coffee stirrer that I keep in my truck.

Garrett
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On occasion of every accident that befalls you, remember to turn to yourself and inquire what power you have for turning it to use. - Epictetus