I recently built a new computer & added some RGB in the form of some Cooler Master MasterFan MF120 Halo ARGB LED 3-in-1 Fan Kit - 120mm all built, a couple of Lian-Li Lancool II Side ARGB LED Strips, Aorus X570 mobo.
I also have a Corsair K95 Platinum, a Corsair DARK CORE mouse & a Logitec G13...