The only thing companies are interested in is money. Whatever you buy try your best to make sure the product is made by a company whose values you agree with.

For example, Gillette ran an ad campaign which said men were not good enough and we needed to be better. I have not bought a Gillette blade since.

Other examples are boycotting any misandric tv shows.

If you consume anything pro-male rights make sure you pay for it (if you can), for instance, books, film, music, whatever. Don't just download it for free. Show the seller that you want more of what they are selling. Encourage change in the only way businesses understand, with your wallet.