My 2010 Legacy’s crankshaft pulley decided to separate from the shaft so I had no power steering, no water pump and most importantly no alternator.

I had to go 8 miles to get it home and the battery died 5 minutes into it. Luckily I had some zip ties and glue. Glued the crankshaft pulley back onto the shaft and made a belt between the pulley and the alt. Worked well enough to bring me home where it promptly died

Actual photo of my fix (before I trimmed down the zip ties)