General synonyms:
* Ample
* Plentiful
* Copious
* Profuse
* Overflowing
* Rich
* Full
* Numerous
* Bountiful
* Extensive
More specific synonyms:
* For resources: Lavish, overflowing, teeming, brimming
* For ideas: Prolific, fertile, inventive, creative
* For emotions: Overwhelmed, ecstatic, overjoyed
The best synonym to use will depend on the specific context of your sentence.