can we use bitcoins to trade other things ?
Bitcoin is tradable. That is why we have trading discussion in this forum. And bitcoin can let you buy something from this forum. I believe there is a goods section in this forum. Such as appliances you can buy here.
This is not the way out. One forum could not solve the problem of trafficking. We can sell each other things but for bitcoin it is important to be able to buy any goods in any online store. You need to create the necessary conditions. It depends on those who have the possibility of adopting decisions at the global level.