What would you do? Playroom area choices

Our house is big, but was built as a two bedroom, with a living room and

den/family room. We only planned on one child and life happens so three kids later, here we are! Our girls share the master bedroom and our son has his own room. We converted the family room/den into a master bedroom. I’m trying to make

a play area and I have two options... I can half the master bedroom and make it a play area or I can make an area in our kitchen. What would you do? If you have pictures or ideas of what you’ve done, please share. I’d really like to figure it out before Christmas lol