You know, the Nilbot (next to Burnert's Cabin) also works as a Chillbot.
Ice indeed. You just need, you guessed it, a power inverter!
Go to the Nilbot. Put the glass (you get it from Lonzo's table) in the dispenser. Insert the Power Inverter and it turns into a Chillbot! You get the ice to the glass from the button.
Right! You should now have got Toni out of Lonzo's. Don't read further until you have done that!
Ok, the second time you are getting the ice Chillbot is a Killbot! You need to throttle!
Really? Insert the throttle limiter to the right compartment. Activating the Chillbot is a skippable minigame. Take the ice into the glass as before.