It has been a bit of a losing struggle trying to stay on top of the new found clutter when our home welcomed our first child, Michael. He recently started sitting at the table with us and eating solids, and we soon found that our table was constantly occupied with toys, bibs, and other randomness. I was originally planning to install some simple rails for a Trofast storage box that I had lying around, but soon realized that it was a perfect fit for the pre-slotted rails in the chair. There are larger capacity Trofast boxes, but I think it could possibly flex out of the rails if they are overloaded. You can also purchase the additional finger hole lids to keep spills out of the boxes.
The Stokke Tripp Trapp High Chair, while expensive as a new purchase, is quite affordable second hand and maintains its resale once your children outgrow it. It is also made from beech wood without much plastic which means that this is begging for more Ikea Hacks! You can have more fun with these chairs by color matching/contrasting the assortment of Trofast colors to the Stokke’s colors.