Wave splicer
Takes two inputs and uses the positive waveform to mask the negative sign of the waveform. For example, if Positive is square and negative is sine, then the output will be a wave where the top looks square and the bottom looks like a parabola. The top takes precedent, so the bottom side of the wave is only present when the positive input's waveform is 0 or less.
Frequency Modulator
Module any patch that takes a pitch with any other signal. Plug your modulator into the modulator input along with a Melody input, and output the result to the carrier, which can be whatever. FM and dev work the same way.