Given the conflicts of interest in the Trump presidency regarding Trump businesses many are voting with their wallets and refusing to patronize his businesses. Here are two resources you can use if you choose to do the same:
Don’t Pay Trump
The Don’t Pay Trump chrome plugin aims to “Hit Trump where it hurts most – his wallet.” and alerts you when you are about to shop on a business affiliated with Trump.
Grab Your Wallet
GrabYourWallet.org features a spreadsheet of Trump-affiliated businesses to boycott.