One of the rarest Pocketeers, and one of the few not to be
entirely self-contained in play - in Blowpipe, you assembled the eponymous
weapon from the pieces inside the case (the two yellow tubes form the
pipe, and the three black pieces form the mouthpiece, connecting clamp and
sight), which itself then becomes the target for the little sucker darts.
Crossbow was almost identical to Blowpipe in principle, but instead of a
blowpipe, you constructed a crossbow (natch) which used a rubber band for
propelling the darts.