Lunchtime Deal: LED Tap Temperature Visualiser… $4.50

This little gizmo attaches to your tap and will glow blue when the water is cold, and red when it's hot…kind of cool if you've got kids (or want a weak light show). It's powered by hearing-aid batteries and shipping is free. Sure, you only save $1 on the normal price, but I didn't realise these things were so cheap! [Focalprice via OzBargain]

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