For every great automated device that makes our home life easier, there's bound to be several that miss the mark. They can't all be Roombas, right? But even amongst the graveyard of products that don't catch on, there's a few stragglers that really never stood a chance. They're solving household problems that don't exist, and tackling tasks that are easier done by hand or foot.

Product: Mailbox Sentry
Task: Checking for new mail.
Easier Method: Walk to the mailbox.

Product: Go Duster
Task: Motorized to spin and make dusting "fast, easy & fun!"
Easier Method: A regular duster and a twist of your wrist.
Product: CastOven Microwave
Task: Finding YouTube clips to play so you're not bored while your food cooks.
Easier Method: Entertain yourself with your own thoughts for 30 seconds.

Product: LED Faucet Lights
Task: Lights up to tell you if the water streaming out is hot or cold.
Easier Method: You have hands, don't you? (Bonus tip: If it's steaming, it's too hot to touch.)

Product: Handy Caddy
Task: Providing a sliding tray for your coffee maker so it's easy to slide out from under the cabinets.
Easier Method: Save your money, bulk up your biceps and slide your coffee maker acorss the counter without the Handy Caddy.

Nomade Express Slee...
I feel I must comment on the LED faucet, as both a product designer and a father. Little ones have a higher skin sensitivity than adults and the ability to "see" hot vs. cold is an easier and safer metric for a child than sticking a hand in to check. I've worked for the sink/faucet industry before, and there is a high demand for making temperature selection and/or distinction clear to the consumer.
Product: Unplggd.com 5 Useless Gadgets post
Task: Complain about 5 Useless Gadgets we didn't know existed
Easier method: Don't open the page.
Ditto Ramjaw
Re: Handy Caddy
could be useful, if you don't want to scratch up your countertops by scooting the appliance out from under the upper cabinet to use it and back to store it each day. My easier method was to relocate the coffee pot.
I still feel like my mom would buy some of these.
The Go Duster infomercial is classic. So many weird sexual innuendos when that thing is used with a vase.
Forget the handy-caddy...put a tea towel under items that you need to pull out from under cabinets to use, like your standing mixer (THAT THING IS HEAVY). The item won't scratch your counter tops and it will be easier to slide back and forth without having to buy a new gadget to do it.