You all know how to play Pairs - you know, pairs of cards with various
pictures on them, two of each, face down on the table, look at them one at
a time, remember where they are and when you can remember a pair you can
pick them both up.
Print cards with pairs of pictures (I did them A5 size, an A4 with two
copies of the same picture, then cut in half). 40 pairs worked out about
right for 5 Sixes.
Take your Pack to the woods. Get a couple of adults to distribute the
cards at random all over the woods, in fairly obvious places.
Working in Sixes the Cubs have to find the cards, remember where they are,
and collect pairs. They are not allowed to carry a single card with them
unless they are going straight to it's pair and know where it is.
When they have two pairs they can bring them back to base (so we can keep a
tally, and call a halt when all cards have been paired).
Watch the Cubs run backwards and forwards through the woods for an hour