Even better would be to have a probabilistic weight to these various items. Computers are way better at finding patterns and irregularities in patterns than we are at making irregularities. If I were to "accidentally" forget my phone based on my own decision, it would probably cluster in some way, say, forgetting it every 17 days +/- 1, or on Thursdays more than any other day, or something.

So create a profile, then use RNG to match yourself to that profile.