In this talk, I will outline some ongoing work to understand the dynamics of a simple model for moist convection, known as Rainy-Bénard convection. The classical Rayleigh-Bénard problem is modified by the addition of an internal heating source due to the condensation of water vapour, allowing for conditionally unstable states in otherwise stably stratified environments. I will outline how the various dimensionless parameters controlling the system can be interpreted physically, and what dynamical regimes can be observed as these parameters are varied. Large 3-D numerical simulations of the Rainy-Bénard model reveal a self-aggregation process of the condensation-driven updrafts, reminiscent of results from more complex atmospheric cloud simulations.