Sologear’s uGO FlameDisk is an eco-friendly grilling option that employs solid ethanol as its fuel source and lights instantaneously with the touch of a match, no lighter fluid required. Users simply peel off the device’s protective film, place the disk in their grill and light it. The aluminum disk is ready to cook on in less than a minute—saving roughly half an hour in time that would ordinarily be spent waiting for charcoal to heat up—and will continue to burn for at least 40 minutes.

What if we could recapture this untapped source of wasted energy by transferring the heat from that shower waste-water to cold incoming water? The EcoDrain, a simple heat exchange unit, does just that, saving water heater use by up to 40%.