QUOTE (Y2HH @ Apr 21, 2012 -> 03:25 PM)
Shrugs are all traps, it's an isolation exercise, but upright rows are a more of a compound movement that do hit the traps, but they also hit the delts, too.
Being that this is all in home, and that you do not have barbell, the best you'll be able to do is the Arnold press and/or overhead presses...if you have heavier dumbbells, try to slowly work your way up to using them.
They're adjustable dumbells, I can work up to 45 pounds for now, but I plan on buying more weight plates soon.