FMT Bands are the most versatile piece of at home exercise equipment to have on hand. If purchasing one get the "Magenta" color/strength. If purchasing two get the "Pink" and "Orange" colors/strengths.
A foam roller is a great tool to use to reduce lowerback pain and do self Myofascial release, which relieves muscle tension and stress. Purchase the 36" long roller.
This looped band set can be used to perform a variety of upper and lower body exercises at a great price.
A stability ball is another useful tool to have on had at home to replicate a variety of exercise that are performed during your in person visits. A 65cm size ball fits most.