Campbell.
"Box of spare parts" she says, and I mean... Whistle's got 'em. He's got a lot of 'em, in fact. Sooooooooo many.
So, yeah, she got a GIANT box of spare parts, along with a few tinkering type tools and a pair of magnifying goggles to help her play with them up close. I do not have pictures, because I fail. It was probably worth more than 25 Woolongs but... it didn't COST him anything so he feels it's acceptable cheating XD
And the card was signed "Whistle -- Let me know what you make with them!"