A somewhat related story: pulling out nails with a snap-off blade utility knife is not fun, nor easy, but a lack of alternatives may force one to do it.
It’s not a common situation, so the blade design makes sense in general: once a part is dull, just break it off. But for impromptu carpentry (also know as disassembling Ikea shelves), a Nack Utility Knife would’ve been the dream tool.
Instead of having to snap the blade off or replace it, the Nack simply comes with a cartridge of 30 blades and a simple turn of the end cap replaces the current one.
Of course, if you plan to pull out nail just remember to bring a pair of pincers. For a variety of other jobs without the hassle of losing a blade at a bad time or of having to fiddle with the knife, get a Nack.
How much under $29.99?
Some: $15.99 on Homgar.com.