I'm playing a level 6 character in a gestalt game and on one side my character is an unbodied. Can I gain a physical body somehow? Is there a way I can use the special ability manifestation at will? How can I use equipment?
Getting an unbodied a body is difficult...
An unbodied can't use the special ability manifestation, which is largely exclusive to ghosts. An unbodied, therefore, uses magic or like means if it wants a body; the most common method is the 5th-level Sor/Wiz spell magic jar [necro] (PH 250-1).
...But having an unbodied use equipment is easy
There's a feat that allows manipulating specific objects, and a type of object that allows incorporeal creature to manipulate them.
- The monstrous feat Ghostly Grasp (Libris Mortis 27) grants an incorporeal creature the ability to "wear, wield, and otherwise use" corporeal gear as if the creature weren't incorporeal. Without that feat, the creature can only employ equipment possessing the special ability ghost touch.
- Items made of ectoplasm (Ghostwalk 13) possess the special ability ghost touch. However, finding someone who can craft such items so the items last indefinitely may be a challenge.
While the unbodied and other incorporeal creatures have Strength as a nonability, a creature with the feat Ghostly Grasp or trying to use ectoplasmic equipment can exert physical force upon specific items. Talk to the DM about how to compute such an incorporeal creature's carrying capacity. (I have used without issue the house rule that incorporeal creatures have a carrying capacity as if their Strength scores were 10.)