The HILT convoy grows and shrinks as others travel with us, but there are seven consistent carts that make up the official caravan members.  In marching order, they are:

The Helpful Bus: A covered, two-horse passenger wagon with storage space for two large canvas tents, food, and luggage for the passengers.

Davion's Glass Hole: Eric Moon  add details

The Confirmation Dias: Richard Cunliffe add details

The Junkular Aria - Ryan Walsh to add detail.

Damis the donkey  and the Donkey-back Pythagorean Shrine: David Porreca  add details

The Magma Brewery: A portable brewery with enough room for one to sleep inside.  The back converts to a storefront to sell from.  Contains alcohol and things to make it with, as well as scientific materials collected on our journeys... (don't mix them up).