What is the single gadget you own that gets far less credit than it actually deserves

[RandyOrton26]

Some gadgets become genuinely iconic and widely praised the moment they launch, while others quietly do their job extremely well for years without ever getting much recognition or attention at all, either because they occupy a fairly unglamorous product category, or because they simply never generated the same kind of marketing buzz as flashier competing devices released around the same time.

These underappreciated gadgets often end up being some of the most genuinely useful items someone actually owns, precisely because they were bought for practical reasons rather than hype, and they tend to earn a surprisingly loyal following among the people who actually use them regularly even while remaining relatively unknown more broadly. What is the one gadget you personally own that you think gets far less credit and recognition than it actually deserves?