In the world of portable sewing machines, mini handheld sewing machines represent the smallest category.
You can literally operate the machine with one hand while holding the fabric with the other hand.
They are designed primarily for performing emergency repairs when you are away from home or don't have a standard sewing machine.
Most of them run on batteries, so you won't have a cord in your way as you work.
Quilters find them useful at times for quick basting tasks or when teaching a young person about sewing.