Re: Preplanning
Power-Ups: Impulse buys may be a solution. You can modify that system as you like anyway.
Also this may be a case of Patron (Provides Equipment, Highly Accessible). And for really weird case it may be even heavily modified Snatcher or Payload (Cosmic). It's a power from video game, so you may need seemingly supernatural traits to represent them.
But I'd go with Gizmo for such ability. Or just plain campaign-wide Impulse Buys with no relevant advantage on Character Sheets unless players want different access to that mechanics for different PCs.
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