I don't have anything to celebrate, but any occasion is good to make a list of people who I think you should follow, but judging from their follower count you are not (great people who are not really active are not included, and I am setting an arbitrary cut-off at 3k followers).

(In random order)
@VergaraLautaro: One of my go-to guys about the history of science.
@PKoppenburg: Excellent summaries on what is going on at LHC (especially LHCb).
@lisyarus: This thread should be reason enough to follow him https://twitter.com/lisyarus/status/1318605976786919424

@PhilipLynchGW: Nice explanations and visualization about black holes, GR&co
@Quasilocal: At the edge between Mathematics and theoretical Physics.
@Orad: Optics, Photonics&Co.
@mickeykats: Optics, Photonics&Co.
(Yes, I have a bias toward those disciplines )

@sfera314: Great visualizations, animations, and Physics mini-threads.
@mariakzurek: Particle Physics made fun.
@1cRebeca: Particle Physics made fun 2.
@jonny_nichols: Very cool astrophysics visualizations.

@GiuliaPiccolino: Wars around the world. Especially the ones you don't hear too often.
@CarlaFMFaria: Discussions on how to make science a better place for everyone.

I surely forgot someone (apologies), and of course there is a ton of cool people to follow who already have a gazillion followers ( @SeamusBlackley, @RevDaniel, @gregeganSF, @trishgreenhalgh etc), so they don't need me advertising them