I've gotten pretty proficient at whacking the little button on my alarm clock until it shuts up, and then going back to sleep for 1-3 hours, so the Mini Castle in-ear alarm is mixedly appealing. Slightly larger than a typical earbud, it fits right in your ear and when it goes off, it's pretty likely you'll hear it. Available in black, white, pink or green. $15. [GT]

Mini Castle in-ear alarm [Oh ...