Unfortunately GAME were sold out of the amiibos ("Sorry mate, we sold the last one not half an hour ago") when I picked this up at the weekend so I don't have a real Yoshi plushie to go with Yoshi's Woolly World. The amiibos do seem to be made of unobtainium, which is a shame as it's a fun concept and they actually look quite good (plus my inner Pokémon Trainer wants to collect 'em all...).
Anyway, so far I've cruised my way through to world 5 in what's proving to be a wonderfully cute and laid-back game - it's basically taken the cuteness and laid-back-ness that was Kirby's Epic Yarn, and added the cuteness and general feel-good-ness of the Yoshi games. Oh, and added the crazy hard platforming needed to actually unlock everything - so far I've only managed 100% completion on one level out of 30 or so:
I can see this being just as hard as the original was for 100% completion.
Oh yes, I also stumbled across this gem in one of the later boss fights...
Those of you who've played the original Yoshi's Island may remember that it's possible to one-shot the Naval Piranha boss by whacking it with an egg before triggering the cutscene. If you managed this, then Kamek would turn up, exclaim "OH, MY!!!" and fly off. The same trick almost works here, but not quite... all the balls of wool that you throw do is tie up enemies, and tougher ones (like the piranha plants) can break free. So no boss bypass for you!