I know it isn’t exactly combining two games, but this is what I came up with.
Sorry + Playing Cards:
Gameplay of sorry is normal, but instead of swapping or sending a pawn back to start, youlay down a card. If the other player does not have a card with the same value, then they get swapped//bumped, if they do, they reject the swap.
The idea doesn’t seem to accomplish much change, but it was the best I could come up with in a few minutes, I haven’t played too many board games in the past.