The first scenario is the "No Tossups" map based strictly on the current RCP polling averages in each state. It gives Clinton the narrowest of victories.
However, if Trump flips just New Hampshire, he wins. The RCP average currenlty has Clinton up by .8% in NH - well within the margin of error.
There are also at least 2 believable scenarios that result in Electoral College ties.
If Trump wins New Hampshire but loses Maine's 2nd Congressional District electoral vote, it's a tie. Trump is up by just .5% in ME CD2. That's even closer than NH.
A less likely tie scenario is the "No Tossups" map but swap who wins Nevada and Colorado. That also gets each candidate 269 Electoral College delegates.
Making a Clinton victory under this crazy scenario even crazier, the Senate would elect the Vice President. With Republicans having the majority there with each Senator having a vote. It would be a real possibility of Pence being the VP.
Clinton and Pence, now that would be something.