The chats on this site are a bit frozen :).
Anyway last night I found the answer for my question if someone care :))).
I found fantastic high back booster seat which is inflatable! Looks really comfy so I ordered 1 last night and can't wait to get it!
You can find it on www.easycarseat.com .
As I mentioned before I am mum of 3 and we do travel a lot so any folding things for daily use - I just love.
Any other idea? Folding chef, housekeeper..? :))) Sometimes I got really tired :).