The few times I've needed to get keys on or off a keychain split-ring, it's usually right after I've cut my fingernails. That small annoyance aside, I don't do it enough to warrant buying a tool to make it easier, but if you do, here you go. EDC manufacturer Tec Accessories produces this Artemus "micro-tool," a key-sized multitool that contains a pair of split-ring pliers:
And yes, it's got a host of other functions ranging from useful to dubious:
Enter a caption (optional)
The tool runs $27.
Join over 240,000 designers who stay up-to-date with the Core77 newsletter.
Test it out; it only takes a single click to unsubscribe