Why Shelly recommends it:

While on the road or on the airplane, car seats often have to serve double duty when dinner time rolls around. This tray helps keep meals, snacks, and cups within easy reach, and can also be helpful for reading, coloring, and other activities during long flights. It will NOT work on car seats with armrests that slope downward or boosters with chest protector shields. It WILL work with nearly all car seats with regular armrests or overhead shields (when shield is lowered in front of the child), and with booster seats that have normal armrests or no armrests. Meets safety requirements for use in moving car. 19"L x 15.5"W.

Find it online at: One Step Ahead

Why Shelly recommends it:

Packs small but carries a big kid--up to 40 lbs.!  Weighing only 2.2 lbs itself, the Me Too is the lightest weight hook-on chair that I know of (yet it seats the oldest/heaviest kids), and therefore, it's the easiest to travel with. It's strength and stability come from an aircraft-quality aluminum frame with a rubber flange, which clamps onto tables up to 1 7/8" thick. In most cases, the shorter clamp length will not interfere with table ledges and skirts, but if this is a concern, see the Easy Diner below. Includes 3-point safety harness. Wipes clean or can be fully submerged in soapy water if needed. Folds to 13" x 9" x 1".

Find it online at:  Amazon,com

Why Shelly recommends it:

The Inglesina Fast Deluxe is another very lightweight option, but it features a higher back with some padding for comfort, and it fits thicker tables--up to 2 1/4" thick. Includes removable washable padding and a three-point safety harness. For children up to 33 lbs. Folds to 15 3/4" x 13 3/4" x 4". Weighs 3.5 lbs.

Find it online at:   Amazon.com

Tip: Hook-on chairs should not be used with glass tabletops, tablecloths, or on table extension leaves.

Why Shelly recommends it:

The Easy Diner gets around a wide variety of table ledges (or "skirts") that can be troublesome with many other models of hook-on travel high chairs, and it provides padding from top to bottom for supreme comfort. This hook-on chair also has a higher weight limit than most others (not counting the Me Too), ensuring you will get your money's worth from longer use. What's more, it offers a 5-point safety harness that converts to a 3-point for the older child. Babies may begin using once they can sit up unassisted, up to 37 lbs. Folds flat for travel with its own carrying case. Weighs 7 lbs. 

Find it online at:   Amazon.com  

Tip: Hook-on chairs should not be used with glass tabletops, tablecloths, or on table extension leaves.

Why Shelly recommends it:

It's a truly travel-friendly "booster." The On the Go packs down to only 2" thick, then self-inflates to give a 4" boost to hungry kids on the go (a great alternative to "making due" by dining with your child on your lap). Straps securely to most restaurant chairs with adjustable seat and back straps. Three-point safety harness. Recommended for 12 months to 36 months. Weighs 2 lbs. 

Find it online at:   Amazon.com