Working in the VA is an honorable thing to do.
(paraphrasing) : to be fair my
downtime is one of those things I'm at the whim of morons trying to unsuccessfully kill
R.A.I. , so I'm not even sure what
Because slapping people upside the head with a demiplane is too awesome to be buried in T.O.!
Meh.
You don't need to butcher the flying crap out of how a crystal stops being a crystal to blow up to claim you can wield something as an improvised weapon. I mean you could honestly try using a shape altering effect to claim just about anything is a "bolt" to an imaginary creature size for the purposes of Launch Bolt or w/e. Likewise given the prevalent of extrademsional spaces in D&D you could always ask your DM about casting Magic Weapon on your Handy Haversack before waylaying them solo-Banjo style with something that houses thousands of lives (just stuff swarms into it).
Call Weaponry is a normal item.
Soulbound is a specific item (twice) and is masterwork to be a +1 magic item.
Mundane Crystal equal masterwork.
http://www.d20srd.org/srd/psionic/items/specialMaterials.htm#crystalMundaneSRD has 3 Genesis's (genesii ?) ... but Planar Vanguard 10 has a lot more stuff it can do.
It can set the Elemental Traits, so Earth + Positive = 2e style Mineral = lots of crystals.
"has total control over the landscape at the moment of creation, so she can decide whether it will be foreboding, mountainous wasteland, or bucolic forest."
Bucolic forest is more complicated than simple crystal.
If the problem of the psicrystal part,
is that it's not enough of a psicrystal to get turned into the demiplane,
you could always have a actual psicrystal, fest Fusion on the weapon and psicrystal,
and then PAO the combo into itself to make it permanent.