“Pee-wee’s Playhouse” has come and gone, but Playwrights Horizons is just setting up shop. What a concept: in-theater childcare!

Beginning with the Feb. 27 matinee of a play called, aptly enough, “Kin,” the off-Broadway theater will turn one of its 42nd Street rehearsal rooms into a day-care center: For the duration of the show, theatergoers’ children ages 4 to 12 can enjoy supervised arts and crafts and maybe even learn a song or dance.

The cost: $15 per child — and free for the children of Playwrights Horizons’ subscribers. The bottom line? Priceless, says Leslie Marcus, the theater company’s managing director and mother of two, ages 4 and 9.

“We’ve been discussing this for about five years, ever since we moved into a bigger building,” Marcus says.

“Many of us with young children struggle to see as much theater as we could see before we had children. The stumbling block was, who would the baby sitters be?”

The answer — one subsidized by the not-for-profit Theater Subdistrict Council — is the Sitters Studio, a licensed, bonded baby-sitting company made up of moonlighting actors and artists.

“I know this sounds like the Hair Club for Men,” Marcus says, “but I use the Sitters Studio myself. They’re fantastic!”

The sessions — called Playtime! — will be offered during select performances of “Kin” and two other productions this season; advance registration is required.

For more information, check playwrightshorizons.org or call 212-564-1235, ext. 3152.