We have a program in my area where you give your old, functional bike, and a minimum donation of $15 per bike to cover shipping and storage costs.

In exchange, we get an income tax receipt for the market value of the bicycle PLUS cash contribution. This company has shipped over 50,000 bikes. Currently, 18 countries in Latin America and Africa benefit from their bikes and the number of recipient countries continues to grow.

http://cyclonordsud.org/en/donate-bike

That is what we are doing with our old hybrid bikes that are still functional, but dated and no longer used. It's like giving them a 2nd life and we know it will get someone very happy somewhere in the world.