You can buy an ingenius tray for the Stokke Trip Trap in Germany. You can order one for transnational shipment from ebay.de. Search for "Clic-Clac Tisch". It is very stable, easy to put in place and remove, easy to clean. I don't know why it isn't sold everywhere. Realistically, a young baby cannot be parked tableside to eat like an adult. You really MUST face her. The Stokke is sold in some countries (USA) exclusively for non-babies... no baby bar, etc. is available or recommended. However, it's preference. I've found it very well.
I find the Stokke is very good. By allowing the proper plate length under the thighs and a resting/touching place for the feet keeps her from slithering to the edge. In highchairs that are not so adjustable my LO slumps horribly.
Without the cushion option, the Stokke is very straightforward to wipe clean, too. The cushion washes up well. The Stokke also somewhat resembles our own dining chairs, so I welcome it at the table for years to come. It "hides" well.