Sorry, mostly only in Finnish.

Wooden bricks

Take bricks apart and
then put them back together.
TroubleBox

Fit pieces back to box.

Maid's lock

Take the metal ring out.

Buffalo balls

Move the ball to the other loop.

T-test

Build the letter T from these four pieces.

The square puzzle

Lead the big square out from the box.

Cross

Built a cross from these pieces.

Brownie

Take the ring out from brownie's neck.

'Kilkerot'

Take out the string.
Pigtails

Disconnect the pigtails from each other.

Heart

Take out the heart.

'Riesa'

Take out the 'riesa' from buttonhole, without opening the hitch.