I just remembered another booster seat that is fairly low (I've sold them from time to time). It's called a Valco Kids Kit Hi-Seat. It does come with a tray, but it can be removed. From memory the seat isn't nearly as high as others I've seen. You can see a pic of them on the Baby Bunting website. Click on the "Highchairs" link and then click on the "Portable Boosters" link.