If you’re a person of diminutive stature, likely you find most garden tools too tall. I’ve heard of some shorter folks buying “big kid tools” made of metal, not plastic, designed for older children, but this option is foolhardy at best.
There are tools designed to be small such as the Little Hog rounded shovel for dividing perennials. There’s nothing that says that shovel couldn’t be used for a number of digging chores. Or, in terms of shovels, you can select a full-size shovel with a straight handle, not a D-shaped handle, for double-digging.
If all else fails, you can cut off part of the handle, assuming it is made of wood. In this manner, you can shorten practically any garden tool to fit your size. I have done that with one of my gardening hoes. I had two hoes, but I wanted a shorter one so I cut the handle down to the size. It works great when I’m on my hands and knees pulling and digging.
If you know of another option for shorter gardeners, your welcome to share your ideas in the comments.