I also find exercise helpful. Especially taking walks. I like aromatherapy and it helps relax me, so I put on a good smelling lotion or perfume and just enjoy the scent. There's some aromatherapy lotions that Bath and Body Works makes that I love, especially the Eucalyptus Spearmint one, it's very soothing. There are also sprays you can put on your pillow so if you're laying down you can smell lavender or whatever scent you like.

I've never personally used a weighted blankets but I've heard wonderful things about them and I do plan on getting one eventually. They're supposed to be very helpful for things like this.

Journaling is another thing that helps, but it depends on how irritable I'm feeling. If it's just slightly or moderately, then writing things down can help me but if I'm super irritable it just works me up even more and makes me want to rip through the paper.

I find coloring soothing. Any arts and crafts.

There are also things like fidget toys and putty/clay that can relieve some tension.

Putting on music is one of the most effective things for me. Turning the lights off and just blasting my favorite songs through my headphones.

Sometimes I pray my Rosary (I know this isn't for everyone as everyone's faith differs and some aren't religious) having the beads to hold onto and saying prayers is very meditative. I think meditating in general is very hard when your irritable but something about having something to hold onto and the repetitiveness of it makes it different/relaxing.

A hot cup of tea or cocoa is always a good way to go too.

Anyway, those are just some things that come to mind, there are tons of great ideas in this thread. I hope you find some relief soon