As featured on OpenSea:

Pin this Ethereum Flag Flashing LED Blinkee Pin on if you are a fan of the 2nd largest cryptocurrency (by market cap.) Thankfully, by all indications, Ethereum is considered a commodity by the US government. Constructed of printed circuit board silkscreened with nano-led ink. No battery required. Blinkee NFTs now use ether energy to illuminate!! Won’t fall off or damage your clothing. Blinkee NFT pins use bio-magnetic clasp and are tuned to the body of the wearer.