Even if he decides not to do, y'know, the obvious, there's gotta be some creative ways he can fuck shit up for Trump. Nothing he does in terms of actual policy will stick, but make Trump spend his first hundred days undoing Biden's last 75.
Especially make him undo stuff that will be incredibly popular. Executive order legalizing marijuana nationwide. Declare a free pizza party for the whole country, scheduled for the first week of February.
Declassify Trump's IRS records, his FBI file, and everything available about his personal habits during his previous stay in the White House. Did he ever order any pay-per-view porn? Clog a toilet? The American people deserve to know.
I'm just spit balling here; I'm sure there are even better ideas.