Does anyone have a recommendation of some sort of travel tray or lap desk for young elementary school age kids (age 4.5 and 6.5)? I'm looking for something to help them spread out a bit and do drawing, workbooks, beads, etc. in the car.

Now that we have a minivan, it's harder for the adult passenger to hand things back to them (one of the girls sits in the third row). So I'm also curious if you've found that back-of-the seat organizers are helpful for kids reaching their own toys/snacks/activities.

Thanks!