i usually start from a classic analog shift register patch with copier maschine then use flip flops (or clock dividers) driving both envelopes and sample & holds for the additional voices, each one sparser and with longer notes than the preceding one. this way you get a much more interesting orchestration technique than just the typical ASR.
@dansimco: another trick to get very consonant lines is to use pentatonic scales, they contain intervals that usually blend well with one another when performing chords. primitive but good sounding!
or just make your scale mask containing only the notes you chose. eperiment with different solutions. make a new scale mask each time you try it to further explore meaningful harmonic relations, and enjoy controlled dissonance if you like it (i do)