The dog in the burning room is your space heater. The flames are the news headlines about the 1,700 house fires per year caused by space heaters. The coffee cup is the $30 you paid for it in 2018. This is fine. Here are five that aren't on fire.
Space heaters older than 5 years (worn-out tip-over switches). Power strips that have visible scorching. Lithium-ion batteries that swell. Bathroom GFCIs that won't reset. Anything with a frayed cord. Every one of these is a real house-fire vector and every replacement is under $40.
All three brands carry the modern safety stack: tip-over auto-shutoff, overheat sensor, ETL or UL listing. Vornado VH200 ($60-80), Dr. Infrared DR968 ($120-150), Lasko 754200 ($45-60). Each is on sale during the fall heating cycle (Sep-Nov).
Anker PowerExtend ($25), APC SurgeArrest ($30), Tripp-Lite TLP1208SAT ($35). Look for joule rating ≥1000 + reset button + visible LED indicator. The $5 Walmart power strip without the surge rating is the dog. The Anker is not.
A swollen battery is one bump from venting. Manufacturers replace under warranty. Out of warranty: iFixit kits ($60-120) come with the battery, the tools, and the guide. r/laptops + r/ebikes consensus is that this is the single most-deferred home-safety issue.
Standard CR2 detectors fail more from forgotten battery changes than from sensor decay. Kidde + First Alert 10-year sealed-battery models ($25-40) install once, alert at end-of-life. Replace any detector older than 10 years regardless — the sensors themselves degrade.