This isn't a book, but it's definitely book-ish. Looks like a leather-bound volume from the Bodleian but it's just a little wooden box, approx 8-1/2" x 5" x 2" (7" x 3-7/8" x 1-5/8" inside) that's perfect for stashing the jewels, cash, or whatever you need to stash in plain sight on the shelves.

More reliable than your mother, and much smaller, the Med Reminder is a 2-3/8” x 1-3/4” x 5/8” thick alarm that can be set to beep up to six times a day (not quite as often as most mothers, but probably plenty, meds-wise). Comes with (2) replaceable button-cell batteries. Has a little carrying case and a slot to hang it from a cord or keychain.

Packaged as a “single pocket sports belt” this black elastic belt is 1-1/2” wide, and adjusts from 27” to 43” but will stretch to up to 60”. Closes with a molle buckle. In the middle is an 11” long zippered pouch that folds flat under the belt but unfolds to approx 3” wide, and will expand to almost twice that. Big enough to hold a large smartphone, keys, wallet or a bunch of cash. Handy for runners or travelers. Or running travelers. Or traveling runners.

"Laser" safety lights each with super bright LEDs run by (2) "AA" batteries that you supply. It's square and has a flashing or steady LED lamp visible up to 2500 feet (distance may be exaggerated). A 2" x 2-1/2" red plastic reflecting lens covers (3) lamps. Hook it on your belt or pack with the belt clip, use the included elastic strap for arm or leg mounting, or the included aluminum flange to attach it to your bike.. It's great for general use as a warning device or as an emergency signal for roadside breakdowns.

This well-made plastic siren/whistle, a touch over 3/4" in diameter and a similar touch under 2" long, has a perforated metal disk that rotates in response to a silent blast from the perpetrator's lungs. This creates a high-pitched, loud and certainly distinctive siren-sound that picks up pitch in relation to the air velocity, sustains it as long as your wind holds out, and winds down quickly thereafter. A fine way to signal your arrival or departure. Probably not loud enough to collect the clan at the beach, but loud enough to get their attention in the classroom! The size makes it hard, but not impossible, to swallow, so please use care in teaching youngsters to sound like a miniature air raid siren.

It's a five-in-one, tubular, stainless steel survival tool. Measures approx 6-1/2" long and looks like a pen or penlight clipped to your pocket, but it unscrews into a tiny compass, a 3/8" dia punch, a 1-1/2" long flint, a 1-1/2" long striker and a small whistle. Don't go on Survivor without it. NB: the compass must be unscrewed and off for accuracy. In black stainless steel.

This 3 Watt LED light is a mighty mite. Just under 3-1/2" long x 1" dia, you slide the sleeve and the beam zooms from a flood to a don't-stare-into-this focused spot. In black or gun metal anodized aluminum, it's waterproof and shockproof with a latching button switch and a pocket clip. Depress the button halfway when it's on and it goes into a rapid-flash mode for emergency signaling. Visible for 200 meters. Five hour life with the included 1-"AA" battery and a 110K+ hour bulb life.

Even as we speak, there are nefarious techno-thieves on the streets ready to read the personal data on the RFID (Radio Frequency IDentification) chips in your wallet. Foil them, we say, foil them with these RFID shields. You pick either the 6-1/4" x 2-3/4" sheet to slip into your wallet and fold around your cards, IDs and passes, or the 3-pack of credit-card sized sleeves, 3-1/2" x 2-1/4". Or both. Made in the USA.