I start implementing this idea for NXT coin but I decided to share it here with you and take some other crypto currencies onboard.
I am running a virtual mobile operator and I intent to use it internally in crypto communities as a service that is lowering your phone bill and investing in
your favorite currency at the same time - the service will accept the crypto currency but it won't spend it, just holding the currency until specific price is reached.
The investment proposal/fundraiser is listed in detail here:
https://nxtforum.org/general-discussion/nxt-powered-virtual-mobile-operator-binding-contract/your comments on the overall model are welcome.