The triangle does the same thing as a rattle but is bigger and has more things to spin and look at and it keeps our little one entertained for a while it would be better if you had 2 different ones the elc used to sell squares as well but i don't know if they do any more but at just under £12 does feel expensive but it does last and is very strong it can be thrown around and its a toy that dosn't need batteries and can just be wiped over if it gets dirty
When you turn the triangle upside down the wheels on the side spin around by them selfs.There is a mirror on it but its very small and you have to put it very close up to see themselves in it.
Its good for there sences because of the noisy beads that they can see and listen to.
I feel its a very good learning toy that is enjoyed more with an adult and gets the baby interested straight away because they are very intrigued by it for some reason maybe because they can make it do things and is bright and colourfull.