Team Heads
BattleArena comes pre-installed with a team heads module which lets you add the team item configured in teams.yml to the player's head.
Configuring the Module
This module can be enabled by adding team-heads to the modules section of your Arena Configuration. You can then use the team-heads action in any event to equip the team item onto the player's head. This option is used by default in ArenaPaintball.