Sometimes you get a Kuri pet you don't like or a duplicate one you've already had several times and just want to get past it without having to spend gems to open another present box.

Of course you can box it up so you can get a new Kuri right away. But what happens when you've filled all your boxes and don't have gems to buy a new box? If you still want to get past your Kuri, you can!

Simply put the Kuri to sleep then go to box it up and switch it out for a different stored Kuri. Ah, but then you feel you have to deal with that Kuri instead right? Not so. Just bring the new Kuri into play, put it to sleep and go back to the boxes to retrieve your original Kuri. It will still be in night mode. When you've "woken" it up, it will give you 3xp even though its sleep meter hasn't changed at all. Just put it to sleep again, swap it with the crated Kuri you had before and repeat. each time you bring your sleeping Kuri out of the box and wake it up, it will give 3xp. It may take a little of grinding this process to age it into sellability but at least you can get on to a different Kuri that much faster. Just remember to put it back to sleep before crating it back up.

PS. if you use the same boxed Kuri each time as well you can age that one along as well using the same process at the same time.