I'm pretty sure I can also shove a blockchain in there somewhere too even though they're a bit passé.
I can however recommend the Spiral Model [1] as a lesser known Waterfall variation, which carries a heavier focus on risk management. It resembles a conch shell, and may require up to three attempts [2] to get your toilet development process correct.
or will you consider a piss left license?
But the real money is in piss+poop enterprise which comes with SSO (single shit to orbit).
I'm 100% certain this is how quantum computation works and am available for department chair positions and speaking engagements for conferences.