In a perfect situation for myself, I'd say use it for a wall-hanger. If you had a complete 59/66 that wasn't in that good of operating condition, or simply non-operable, that would be the ideal solution. If you like the trench art that much, you probably don't want to damage it by dragging it around the woods or the range. Building another rifle just for being able to use the stock seems to double the "I don't want to use this, just look at it" scenario.
But these are just my own opinions. You may have enough of the Yugo's that an extra two or three "for looks" is completely cool. All good for you! Many of mine are "just for lookin' at", too!