Zoobots by Bruce & Ben Whatley

This book is no longer available but it can be ordered as EBook from Harper & Collins
Zebo lives in Junk Jungle with her two best friends, Hyde and TC. But she longs for another best friend — one not too big, not too small, one just right! But where in Junk Jungle will she find this special friend? Making new friends can sometimes be hard to do - unless you live in Junk Jungle, which is filled with things that can be turned into other useful things - like a new friend!