Contact e-commerce websites like Amazon, and request that you want to pay with Bitcoin, Ether or any other coin you like.
It can be done by using site's feedback or contact us forms.
This way we can create demand because good e-commerce sites care about their users. And they know that the more payment methods you have the higher the conversion rate (the % of people who buy something) because some users can use only 1 method of payment. For example, some americans can only pay with Paypal while some venezuelans can only pay with Bitcoin, etc. So, if the site supports more payment methods it will convert more orders on average.
To increase the demand for implementing cryptocurrency payments in e-commerce sites we just have to request that using the contact us or feedback forms. The more people give feedback to their favorite online retailers the more people will start using bitcoin as payment method (now that we have segwit).
The more people do this the more demand for Bitcoin there will be.
Thanks to those who do that.
Not a bad idea. You can become a seller of something that demand cryptocurrency as a payment in your transactions.
If we are doing this, many peoples can know about cryptocurrency, and later they will use it to buying anything.
The only thing that prevents this idea is the volatility of Bitcoin and other forms of crypto currencies and those websites like Amazon will think twice or a lot of times before accepting crypto currencies but I'm pretty sure that they know the potential of this technology they just need to study it first.
There are a lot of big names in different kinds of industry not only on e-commerce sites that are now studying to accept crypto currencies as a medium of payment for their product or services and sooner or later they will surely announce it many many more will join this billion dollar industry of crypto currencies.