We are on our way to San Diego soon and I decided instead of trying to drag a high chair with or do without one I would make a traveling high chair that I could use while I am gone and take it to friends houses for dinner parties etc.
I found a great tutorial over at This mama makes stuff and decided to try to make it. Here is the end result. Karsyn seems to like it (I think she feels like a big girl not having to be in a highchair)
The sides have long pieces of velcro to hold her in and then you pull the seat up between the legs and over the top of the sides and fold it over.
dimensions for each piece are (seat =10"x20") (straps =6 1/2"x 46") (connector piece=6"x4") and I used a thin piece of batting in-between the fabric layers