...You know, Linked Power might be a way to get around that pesky 1 minute manifesting time of Psionic Minor Creation, too (or Fabricate, or whatever). I think it can also reduce costs, if I'm thinking correctly...
Linked Power Metapower Synchronicity + whatever. Synchronicity is the power manifest this turn: name the power to be manifest under normal situations as the readied action, to go off in the event that your turn ends (which is Synchronicity's effect). Specify that next round, you want the linked power to be manifest. This nets a -1 PP cost in the power to be manifest the following round, since Sync only costs one PP, which lets you manifest the power on the 2nd round augmenting it 1 pp further.
Example: 2nd level Psion with Synchronicity, Force Screen, Vigor, Linked Power, and Metapower: Synchronicity / Linked Power. Round 1, Sync is used to manifest Force Screen, Round 2 Vigor with 15 HP is manifested. The whole thing costs 1 Power Point and my focus.
Combined with Earth Sense / Earth Power, thats a net 4 PP reduction from 2 powers over 2 rounds.
(I'm actually trying to verify that it works this way over on the simple Q&A thread.)
Linked Power: THE metapsionic feat for Diversity.