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Small budget, big geek energy. Whether it is a stocking stuffer, a Secret Santa gift or a little "saw this and thought of you", these picks cover radio, astronomy, making and a bit of paranormal fun, all under about $25 at time of writing — prices change, so check the live price on each card.
Many of these are add-ons for a hobby the recipient already has, which means they are the kind of thing people want but rarely buy for themselves. Everything ships from AliExpress sellers, usually in 1–3 weeks, so leave time before the big day, and check each seller's rating and returns policy first.
Cheap optics are great for keeping in a bag or car. Neither of these competes with expensive binoculars, but both bring distant birds, boats and scenery closer for very little money.
A tiny monocular that slips into a pocket or glovebox, with a phone adapter included. Handy for birds, distant signs, sports and concerts. Low magnification keeps the view steady in the hand, which is more useful than it sounds. It is a budget optic, so do not expect premium sharpness.
Listing: Compact Monocular Telescope 8X20 for Adults Portable Handheld Mini Monocular with Smartph…
A larger handheld monocular with a BAK4 prism, sold with a smartphone adapter and small tripod for birdwatching and hiking. The tripod and adapter make it a fun way to try snapping distant wildlife with a phone. The "80x100" in the listing is a marketing figure rather than a realistic magnification, so treat it as a budget spotting toy.
Listing: 80x100 HD Monocular for Smartphone Adapter & Tripod Telescope with BAK4 Prism for Birdwat…
Electronics parts are perfect small gifts because makers always have a project waiting. One is the fun bit, the other is the part they always run out of.
256 individually addressable RGB LEDs on one panel, ready for pixel art, scrolling messages or a sound-reactive light with an ESP32 running WLED. It is a great "what will you build?" gift for anyone with a microcontroller drawer. It needs a decent 5 V supply for bright effects. See our makers guide for bigger panels.
Listing: WS2812 LED Matrix Panel Module 16x16 256 Pixels Full Color Changing Addressable RGB Light…
Pre-wired JST leads with matching pins, in a choice of common pitches from tiny SH 1.0 up to XH 2.54. Every maker runs out of these at the worst moment. Very cheap, so it pairs well with something else on this list. Ask (subtly) which connector type they use, or choose PH 2.0 or XH 2.54 as safe bets.
Listing: 10Set SH1.0 1.25 ZH1.5 PH2.0 XH2.54 Connector Female Housing 10/20/30cm Wire Cable+Male P…
Most radio enthusiasts already own a receiver. Antennas and accessories are where small gifts make the biggest difference to what they can hear.
If they already own an SDR, an HF antenna is the upgrade that opens up shortwave and long-distance listening between about 10 kHz and 30 MHz. This compact active design is easy to mount outside a window or on a garden pole. It needs DC power over the coax, so check how the recipient will feed it. More ideas in our SDR gift guide.
Listing: Shortwave MiniWhip Active Antenna 10KHZ to 30MHZ Mini Whip HF LF VLF VHF SDR RX with Port…
A coaxial bias tee covering 10 MHz to 10 GHz, used to send DC power up the cable to an amplifier or active antenna. It is one of those small parts that radio hobbyists always need for their next antenna project. Best for someone who already has, or is planning, a mast-mounted LNA.
Listing: RF DC Injector Bias Tee 10MHz 10GHz Coaxial for SDR for Amateur Radio 50V 0.4A Aluminum S…
Gadgets for Halloween parties, sleepovers and science-loving kids, plus a calming light for any bedroom.
The flashing 5-LED meter from ghost-hunting TV, at stocking-stuffer price. It genuinely responds to magnetic fields from wiring and appliances, so it doubles as a fun science toy. No, it does not detect ghosts, but it does make a dark evening with friends more entertaining.
Listing: K2-style 5-LED EMF meter
A handheld EMF detector for the person who wants to know how much field their router, microwave or phone charger gives off. It is the more serious option of the two meters here and good for comparing readings around the home. Consumer meters are approximate, so it is for curiosity, not certification. See our science and ghost-hunting guide.
Listing: MESTEK EMF01 EMF radiation detector
A USB-powered projector that fills a ceiling with stars and nebula colours. It is a crowd-pleaser for kids, teens and adults alike, and USB power makes it easy to run from almost anything. Best in a fully dark room with a plain ceiling.
Listing: Galaxy Star Projector Night Light Starry Sky Projector Lamp USB Portable Galaxy Night Lig…