Today I saw someone using a very basic baby seat/bouncer that looked like it was some kind of a travel one - very lightweight, and it shut flat and then sort of 'shook' open (ie it opened up very easily with one hand). Didnt have an opportunity to ask the parents where they got it from - but it looks fantastic for travelling. has anyone else seen such a thing and know where I could get one? Googling is not proving very successful!