Well, it's like you say, for an emergency it works. I once had a similar one and my cat destroyed it, since then I haven't bought anything like that...
At least you already have your useless purchase of the year hahaha... I bought a lining for the case of my wireless headphones... does it qualify as a useless purchase?
hahaha it looks cute but why would you get an extra case for it? I wouldn't really say it useless if you're going to use it all the time but as for that kind of keyboard, it's pretty useless xD