You can donate to Trump on his website. Millions of voters sending $50 to him would be millions of dollars in no time. No corporate, no big donors, just us little people.
Then Trump needs to know it is okay to encourage it.
Money speaks and Trump would show that he is just the messenger and while he wanted to self fund, this is bigger than him and is going for the will of the people his supporters. Trump will not be seen as negative if he does this. Quite the opposite. It would shut a lot of people up who are using that fact that he is self funding against him.
That is the thing no one talks about, THAT is what his opponents are using against him behind the scenes and Trump needs to be the strong negotiator for the American People and tell everyone to donate. Not for him, and no money will go to his employees, but he realizes he needs to implement a strong ground game and get ads on the radio and his supporters want him to take their money.
PERIOD