BOOSTER is an ANR JCJC project funded under AAPG 2026 for the period 1 January 2027 - 31 December 2031. The project studies bootstrap percolation and its interactions with other topics such as kinetically constrained models, the stochastic Ising model, etc. The main focus is on critical models (in the sense of the universality theory on the lattice by Balister, Bollobás, Duminil-Copin, Morris, Smith and Uzzell) and their infection time scaling. We aim to generalise the scope of the locality method of Hartarsky and Teixeira, to clarify the critical-to-subcritical interface beyond lattices and to transfer such knowledge to related settings and models.