We use this skip hop one for our 20 month old. Has worked well on many different chairs, is light and small in the trunk of the car. Also super easy setup! https://www.westcoastkids.ca/sleek-seat-decor-booster?gad_source=1&gclid=CjwKCAjw0aS3BhA3EiwAKaD2ZcX4YQSvc-Qy01zIguO6BhYgvhrPzNdHQ5Om5sYVvdWdppMqR0eW2RoCpUoQAvD_BwE
Mylittleseat.com https://youtu.be/J1NBkN3O8Es
I got a pair of these for the twins and they’re great for home, visiting family, and I even bring them to restaurants. It looks like they don’t have them on prime anymore :( https://a.co/d/2MgG3TY
We used this one at an air bnb and it was so handy. We just strapped it to a dining chair and it worked great: Fisher-Price Baby to Toddler High Chair SpaceSaver Simple Clean Portable Dining Seat & Booster with Washable Deep Tray & Liner, Puppy Perfection https://a.co/d/43Xzawn