Running dictation?There can be several ways to do that:
Picture-word dictation
some fast paced music playing (not too loudly, though)
pictures/flash-cards of rcently studied vocabulary scattered on your desk
two groups of students lined up in front of the board
one student from each group takes a card from your desk and runs to the board and writes the word, goes back to his/her group and passes on the marker/chalk to the next player
make sure the groups are positioned in such a way that they do not overlap each other �s way to the board and each have their own part of the board to write on.
The group that finish with fewer mistakes win.