Water melon monsters for kids birthday.
Superhero Birthday detail 'Avengers'.
Buy a cheap tourist map, transfer it into a fictive map by drawing this and that nice&peculiar - and put it into frames. Black and white suits everywhere.
Secret loft bed for a little princess.
Butterfly Birthday masks.
Make gingerbreads that look like your kids' school surface, decorate them (supported by some decoration&candy sponsors) and sell with a good price at school's Xmas Bazaar.
Make a look alike gingerbread house of your kids's school and donate it to the Xmas Bazaar Lottery.
Up in the loft nest. Almost like an own room for one of the three kids in super super expensive squaremeters in the center.
Not own rooms, but own loft nests for your kids. Stairs leading to a secret loft nest.