1.   He smacked his legs with a birch branch.

2.   I used a vihta, a bunch of very leafy birch branches with which you slap yourself to stimulate circulation.

3.   She decorates picture frames with birch branches, cures her own olives and makes book covers festooned with images of flowers, leaves and post cards.

4.   She decorates picture frames with birch branches, cures her own olives, and makes book covers festooned with images of flowers, leaves and post cards.