[redbarron]

<G09> POSSESSION - ROBOTS may only have 1 (one) GAME PIECE in their POSSESSION at
any time during the match. A 10-point penalty will be assessed for each infraction.
Inadvertent bulldozing of GAME PIECES while the ROBOT moves around the field is
allowed. Controlled "herding" of a single GAME PIECE lying on the floor is permitted as
long as no other GAME PIECE is in the POSSESSION of the ROBOT. Herding of multiple
GAME PIECES, or herding of a GAME PIECE on the floor while in POSSESSION of another
GAME PIECE is not permitted (as this would be considered POSSESSION of more than
one GAME PIECE). GAME PIECES may fall on to a ROBOT during the course of normal
game play (e.g. a RINGER falls on a ROBOT while attempting to HANG it on a Spider Leg).
In such cases, GAME PIECES that are already in the POSSESSION of the ROBOT may be
played. However, the additional GAME PIECE must be removed from the ROBOT (either
by the ROBOT or by an ALLIANCE partner) before it can POSSESS a new GAME PIECE.
GAME PIECES may not be intentionally placed on opposing ROBOTS for the purpose of
causing a violation of this rule. Any such GAME PIECE placements will not be considered
in POSSESSION of the affected ROBOT, and will be ignored.

I would be careful throwing them, because unless I am reading this wrong if you throw one onto your/an alliances bot and cannot not get it off then you are not allowed to possess another one until you or an alliance partner get it removed.