How? A lot of room or witchcraft?
WITCH!
No, just 3 roooms... Basically, filled the jumper maze with the patterns tiles, then made a few items which are painted solid and mask the pattern below. As you go over the item you collect it and reveal the pattern below! Does it make sense?
That's a clever way to reveal the designs hiding below. Really nice pixel designs too, got me in a festive mood.