In the Römisch Germanisches Museum in Köln or C(olonia) C(laudia) A(ra) A(grippinensium), I found these two very fine clay oillamps, both in the shape of a gladiator helmet.
The left one has the shape of a helmet of a so-called thraex, or Thracian. Originally, gladiators were named after civilizations which ones fought the Romans. This gladiator was armed in Thracian style with a small rectangular shield and a very short sword with a sligthly curved blade called a sica.
The right oillamp is in the shape of the helmet of a hoplomachus, armed to resemble a Greek hoplite. A soldier with heavy armor and helmet, round shield, spear and a small sword.
Among many other beautiful objects, those really caught my attention, because CCAA had both a theater and an amphitheater, of which no remains have been found yet.