If Milo will be doing the combo keynote/team building event for your group, please click here to see the A/V needs for his speaking portion; that will cover the team building as well.
If Milo will only be doing a team building event for you, then he will not be using PowerPoint and the only A/V need is amplification. Milo is happiest with a lavaliere (clip-on body mike) because he can speak from anywhere in the room without having to run back to get a mike, but if a lavaliere is not possible, a cordless mike will suffice. If no amplification at all is possible, talk to Milo about what does and does not work in different settings and for different sized groups.