Phonebooks used to be great up until a few years ago. While still useful, now they're crap with not-so-easy on the eyes fonts that are tiny and printed on incredibly thin paper.
Many uses abound for 'em though. They autonomously send them here in the States still and I've sometimes immediately relegated them to the recycling bin. lol These days, I use them to prop things up (have one under a chinsey DVD player and an Amiga monitor so my GF can play her exercise videos), use em as a buffer for something that involves a hammering project, sometimes use the innards for packing peoples wares and they're also good for propping up a shelf that bowing in our pantry. lmao