Put themm in a dark place, ,like a cupboard, or in a paper-sack, check them often.
I ripened boxes of tomatoes that way several times, when an early frost came. Don't believe the "ripen on a sunny window-sill" advise, it does not work.
If you want them fast ripened, put an apple in the sack along with the tomatoes, it speeds them up.

Sounds good to me