Running an Offensive Line Camp

All those are great, but I'd also add in, if possible dummy work, various agility drills, plyometrics. If you can find some 2x8's or 2x10's and have them work on keeping their feet wide as they drive down the length of the board. A few other great lineman drills are

"Battle of Baghdad" which involves a 5yd x 5yd square, three offensive players (QB, and two linemen) and one defensive player. Rules are, one OL and the DL line up on one of the box lines. Other OL is stacked behind and the QB is behind him. On "go", snap of ball, etc. the DL wants to tag the QB. OL is there to block him--pass block style. If the DL beats the first man, the second man can engage, but a double-team is against the rules and is an automatic win for the DL. QB can move within the square, but can't go out of it. DL wins if he tags the QB in time, forces a double-team, is held, or forces the QB out of the box. OL wins if they keep the DL off the QB for the allotted time. A great drill, and the kids go nuts for it!

Also, try the towel pull with three men. One on each end of the towel and one in the middle. The three are trying to pull straight back to a cone 2-3 yds behind them. Whoever touches their cone first wins! Do it tournement style and find out which "dog has the biggest fight in them!"