Delts and traps after work. Seated db presses, low pulley front raises, db side laterals...reverse overhead db laterals, upright rows, bb shrugs. I know many ppl badmouth using straps, but recently I've been using them for bb shrugs...and let me tell you it makes a big difference. You can use a lot more weight while keeping proper form. My traps actually burn after 4-5 sets using more weight with straps...something that rarely happens without them. My forearm strength is fine with all i do, so i dont feel like I'm cheating myself in any way...my traps are growing much faster than they ever did before, just from implementing straps. If u havent tried it, give it a shot!