Let's see, he forbade everyone in the Executive branch from testifying before Congress, and he refused to provide any documents in response to subpoenas. Doing nothing obviously takes up a lot of time for Trump.

“You did nothing yesterday!”
“I wasn’t finished yet.”

and tried to get Barr to interfere with Roger Stone and Michael Flynn's cases too.

In the weeks right after his acquittal he removed several people from their posts who had complied with House subpoenas or otherwise had knowledge and had told others about his Ukraine wrongdoing.

He also authorized large federal grants to Lisa Murkowski's Alaska project and a housing project for Susan Collins' Maine within days of end of Senate impeachment trial.