You could do the final sharpening workout that Tinman told me to do as a part of 10K training: 3 x mile @ 10K pace, 3 x 800 @ 5K pace, 3 x 200 @ 1-mile pace, all with 90 jogs.
A more HM specific workout is 3 x 2 miles, where the first mile of each 2-mile segment is run a little slower than HM pace (10-15 sec/mile) and the second mile is run a little faster that HM pace. Again, 90 seconds between each 2 mile segment.
One last thought: a fast-finish LR, not too long (like 13 miles, for example), with 8 miles easy, 3 miles @ marathon pace, and the last two miles really hard (10K pace or faster). The great advantage of these runs (and I've done a fair number of them, although usually 15-17 miles and not within two weeks of goal race) is that you feel the same crazy excitement and adrenaline as you head towards those final two miles as you do in the race, and those last two miles are at the same effort level as a really hard race, but you don't take a whole lot out of yourself. Quick recovery. It's crucial, though, to do most of the run at a relaxed effort. The MP 2-3 miles should be comfortable warmup for those last two miles--and the last two miles should be fast, hard, and they should hurt. Psychologically, it's great race prep to do this. When you get to that point in your race, you'll feel unafraid.