what is it exactly? i've never seen/heard of it before...is it part to some other item or something, like the computer parts?

Its just a minion.

I think it's one of those newer minions?

I'm pretty sure it's just a new minion, and I think I saw a few others like it.

that set of minions reminds me of WALL-E :)

I'm not sure what kind of thing its supposed to resemble if anything at all. To me it looks like either A. a rock with a stick jutting out of it B. a black piece of snake skin or C. A piece of crumpled rubber or cloth. Its kind of like Edward... one of those items you can't really decide what it looks like (Edward is supposed to be some sort of freeze dried pea though).

It looks like piece of asphalt with a hump in it to me xD

The others all resemble construction equipment but I can't figure out what it is supposed to resemble other than a spaceship or something with a random arm.