Are these a good idea? Happiseat or something like that, handi seat? kept coming up when I googled it but they are pricey even on e bay. It looked the most secure though? Any recommendations? Need to get rid of the high chair as its huge and my living room is small. The kitchen is too small for the highchair to even fit easily so need something that just lives on a dining room chair, preferably that doesn't look too hideous. Will ask for money towards it from my parents at christmas if it is more than £30 or so.