I got out my homemade 3d printer that I haven't used and a while and have done 'some work' on it before I put it away.
Now the prints fail for the most random reasons: from cable for heated bed get twisted the wrong way and getting stuck in the machinery, to spool sliding off the table falling on a Raspberry Pi that controls the printer and powering it off in that manner.
The first two prints in the photo have layers shifted, the last one is just incomplete.