Hi and welcome.The boings you mention do seem to be very popular.Each grey differs in the sort of toy they prefere,some just love ripping paper up,phone books, old paper backs ect.Some love to dismantle things, lego blocks are great for this,some love foot toys and will play for ages with them,some love bashing things like bells about. They all have their own likes and dislikes.Have a small selection of verious toys and you will soon find out what your new baby grey likes.Keep us up dated on your grey and when he is coming home.