This quick little chime succession works great as an indication of the ‘light bulb idea’. It would also work great as a button/menu noise or a ringtone/text notification. This item included 2 Wav files: Idea Indication 1 – 0:05; Idea Indication 2 – 0:05.

More sound effects I recommend: https://audiojungle.net/collections/8427241-sound-effects