Multi-grip barbell or dumbbells for neutral grip training.
Due to a very severe injury when I was younger, elbow pain sometimes limits my training. Although exercises like bench and overhead presses that utilize a pronated grip rarely cause problems, some light weight exercises with a supinated grip cause intense elbow pain. Unlike muscle pain, joint pain persists long after I quit training and is rarely a good idea to push through. Since a neutral grip avoids most of my all elbow pain, I avoid using a supinated grip on some exercises at the end of my workout rather than aggravating my joints.
I have an inexpensive gym membership where I used to go a couple of days per week after I completed my barbell training in order to use the dumbbells there. Unfortunately, that gym has been forced to close again.
Since all of the 10 pound and higher plates that I own are bumper plates, these plates don't play well with Olympic dumbbell handles due to their 450 mm diameters. A rackable multi-grip bar, which is sometimes called a swiss or football, would allow me to use the plates I already own.
Since single arm training is useful, I was curious if others think it is worthwhile to either purchase some smaller diameter plates and dumbbell handles or a set of adjustable dumbbells.