First is a girl playing a uke. Now before the yawning begins, let me say it’s done pretty well for a home-made attempt, she’s cute and it’s a ‘feel good’ video (it picks up around 1:08). I was kind of down today and this made me smile!
The second: USB typewriter. Don’t know what else to say about it.
Around these parts, you shouldn’t just post a link whereof you “don’t know what else to say about it”…
…if you want to “justify your post”, as you put it.
IOW at least describe it; the reader shouldn’t have to click on the link to find out what it is, but be able to decide whether[ they’re interested enough from your description.