If you can find an older model Dodge Caravan ( I think they changed the model around 2007, so a model 2007 or older) you can get another rear seat and put it in the middle position. That model of Caravan comes with a two-seat bench in the middle and a three-seat bench in the rear. BUT, the benches are interchangeable in those models so you can go to the scrap yard, buy another rear seat and put it in the middle. Voila! Now you have SIX seats to hold daycare kids.

I did this many moons ago when I had to do school runs. I think the scrapyard bench seat cost me around $75 at the time. AND, you can pick up a 2007 model Dodge Caravan for around $2000-$5000 depending on mileage and the shape it's in. AND, if you are using for daycare you can write off the payments as a capital cost.