1) Build castles in the air 2) Conceive of 3) Envisage 4) Fantasise 5) Ideate 6) Imagine 7) Indulge in fantasies 8) Portray in the mind 9) See things 10) To indulge in fantasy 1) Dream 2) Fantasise 
[v] - indulge in fantasies 2. [v] - portray in the mind
phantasize, fantasize; phantasise (British), fantasise (British) 1. To indulge in fantasies of the imagination, or to imagine something as a fantasy. 2. To conceive fanciful or extravagant notions, ideas, suppositions, or the like (often followed by about): 'He kept trying to fantasize about having the ideal job after high school gratuation.' 3. T...