Save, trade, create multisig contracts... If people can see the value potential (even before the network effect exists) then you can bootstrap a market valuation. That is literally what bitcoin has already proved.

But all value is a function of knowledge & therefore subjective. If no one knows what a thing can be used for then it is basically worthless. 

 It’s an uncensorable, unonfiscatable digital medium of exchange with a highly liquid market. Not everyone will value this utility but this is the core utility of #Bitcoin. 

 Sounds great, how much will 10 kilograms cost me?