The best replacement for brainstorm is ponder.

The best alternatives to brainstorm are rated as following:
★★★★★  ponder
★★  serum visions
★★  grey matter
★  mind map
★  brainstorm
★  neuralstem
  classify
  mindmap

Your alternative for brainstorm is not listed? Suggest!
Speaking about brainstorm, one probably shouldn't forget about miracle.

Other search terms related to brainstorm and their ratings are:
★★★★★ miracle
You have in mind a companion for brainstorm and it is not yet here? Propose!



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brainstorm
ponder
serum visions