Traditional Medicinals offers pregnancy teas and lactation ones at a decent price, it's available in grocery stores and I've heard of them sending samples for birth educators to give out.
Other ideas: Massage tools, Preggie Pops (anti nausea naturally flavored lollies, they might send samples too), baby socks and hats, reusable water bottles,
Jewelry: necklace cord with a charm like this http://www.firemountaingems.com/details.asp?PN=H207075FN or http://www.firemountaingems.com/details.asp?PN=H203181FX or something spelled in beads on a bracelet, if you want to bend wire yourself something like these http://www.labelledame.com/pregnancy-jewelry.html
Edit,that pewter one might have 1.5% lead though so something similar in another metal would be ideal.
Edited by JamieCatheryn - 6/6/11 at 7:06am
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