You could always intentionally look for a beater Albook if you'd be worried about scratching or otherwise defiling a pristine one. Als, unlike Titaniums, are tough enough to withstand some minor dents without being fundamentally structurally compromised. (Once a Ti starts looking shabby it's going to feel shabby, act shabby, and sooner or later decide to seize up its display hinges for no reason.) The one thing you've got to watch out for if you go there is if the laptop were ever dropped face down while open or otherwise had too much pressure applied to the hinges. (Like if someone tried opening the display to a wider angle than the hinge physically allows.) I've seen several with the box-like housing of the hinge cracking loose from the display panel, rendering the display wobbly.

Honestly of course I do have to say if you're really intending to use this as a "bait" computer to do real work on instead of risking your pretty and nice new laptop you might be better served by looking at, I dunno, a Chromebook or a gently used Core Duo 2-ish vintage Thinkpad-ish quality business notebook. Unless you're really getting this specifically to run PowerPC software you already have and don't want to part with you'll deal with a lot fewer "if, and, or but"-s for about the same money as a decent example of a G4 still goes for.