I'm getting bored of weightlifting. What should I do?

I've been lifting consistently for about 18 months. In that time, I did 5/3/1 for Beginners and GCZLP.

I can squat 200 5x3, bench 145 5x3. I do lower weight deadlifts because I hurt my lower back last year doing them. I avoid overhead pressing because of right shoulder impingement.

I do accessory exercises as well.

I find myself getting bored doing these exercises. I want to continue to build muscle and strength, but I am not sure what to do.

I like to run but I am working through an injury so I am progressing slowly to get back to where I was a year ago.

What do you suggest I do?