If you know what you're doing with electronics design, I've found that leveraging an LLM to help come up with ideas, layout block diagrams, and find parts can be super useful. Integrating Digi-Key or Mouser API support for finding parts pricing and inventory is also super handy. Using the distributor APIs can also allow you to perform natural language search which isn't possible (or isn't easy) through the distributor websites as the LLM can quickly download the datasheet and read it as part of its searching operation to verify if a part should be considered given your requirements.