There's not much. Neither subsystem is particularly bothered about undead. There are a few negative energy powers and you can get a necrocarnum zombie and use your spells and powers to boost the eminently disposable minion but all in all that's about it.

If you're an actual meldshaper, there's all kinds of fun stuff you can do with soulmelds. Soulcaster is an obvious option in that case.

Just having a pool of pp makes this http://archive.wizards.com/default.a.../psm/20031225a immensely more useful. Permanent tattoos are one of the cheapest ways to get certain effects. Cerebremancer exists but it's a little rough of you can't pull an early entry trick.