It's just a 'gimmicky' gift. I have got it once or twice in the V4.5. Another present like this is a bunch of flowers. Your tama sits for a couple of moments and them goes back to the idle screen. It will no longer be in your items list. It's like a disposable toy. It doesn't serve any purpose at all, on both V4 and V4.5, so I wouldn't worry. Just another one of those things!
No need to be mean. I was explaining it, and had most of my info accurate. What I am trying to say is that it has no purpose on YOUR tama. It may have an effect on another one.