Drop downs and reclaimers are two of the best attachment you can get for your dab rig. Drop down adapters allow you to move your nail further from your rig, reducing the likelyhood of stress fractures and cracks in your glass from rapid temprature change.
Reclaimers, or "reclaim catchers" help conserve concentrates by "catching" them as they drip down the downstem. Rather than washing out your rig when it gets clogged, use a reclaim catcher to catch and reuse your excess concentrates. This not only saves your wax and keeps your glass nice and clean, but also works similar to a drop down, pushing your hot nail away from the joint and prolonging its life.