I have a Garmin Nuvi 300 sat nav. This...
I'd like to be able to use it on my bike occasionally so I want something which will hold it securely and keep it dry. It doesn't need power. I'd rather not pay loads for something that I'll use rarely, (even if something purpose made did exist!) so I'm looking for something that I can adapt with a handlebar bracket etc. Some kind of plastic or metal box with a window, for example, but I can't think of anything suitable. It has an antenna flap thing on the back which needs to come out to turn sat nav on.
Any ideas?
Si