I found some gear available online at the Cycle Safety Store that measurers might find useful.
The first is a small pannier-style pack that holds your phone and other small items behind the handlebar stem on the top tube. It comes in sizes for various phone models and costs $17.99.
Phone Bag
The other is a rear light that besides the normal LED flasher uses 2 small lasers to project red lines on the ground behind the bike. It costs $14.99.
I bet once Dave Katz sees this he will be working on mounting one on the front of his bike as a sighting aid to maintain his 30cm curb offset.
Laser/LED Tail Light
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