Need a safe and inexpensive way to know if there's hazardous chemicals in the air after an earthquake, train derailment, industrial fire, etc.? Slide a standard hazmat card into the slot, mount it on your Inspire 1, and fly it around the area in question from a safe distance. Adds about 30g of weight, which should be trivial for almost any aircraft. May your card always come back clean!
This version uses tape or DualLock to attach to your aircraft, even though the "mount system" version is used in the photos. For easy no-adhesive mounting and unmounting on a DJI Inspire 1, you'll want the "mount system" version.
I bought my card here, but they're easily found elsewhere. Just search for "HazMat Smart Strip."