First, let me say that I am not getting any kickbacks for promoting these items! I simply want to share things that make my life easier.
I can’t list them in order of importance, because they are essential as far as I’m concerned.
A good tool belt.
It holds so many of my favorite things. When I was a manager at Oakland Nursery, I ordered this brand for employees from Kaddy Products in Utah. Great folks, it’s a small family business that makes a durable product. http://www.kaddyproducts.com/ There are many color choices and all kinds of things geared to gardeners. No more walking back to the garage to fetch a tool, or worse, improvising with what you have in your hand, it’s all right there with you. When you are done in the garden, you hang it up, and it’s all ready for you the next time.
Tool belt contents:
Quality pruners: When they are sharp and feel good in your hand, you search for things to prune! This is one time to splurge. They will last a lifetime, and may become an heirloom.
A small folding saw: Nice because the moment you see a branch too big for pruners that needs to come off, you can spontaneously take care of it without going after your loppers.
A soil knife: Talk about multi-purpose! It plants annuals, digs weeds, cuts open a bag of mulch, cuts an edge along a sidewalk, and so many things that will fun figuring out yourself!
Plastic stretch tie tape: So many times I didn’t think I was going to need to tie something up, like tomatoes, a stray branch on a vine, etc. but because this is always with me, I am always ready. I like the stretchy plastic because you can tear it with your hands.
This is the coolest bud vase ever! A flower frog in the bottom of a beautiful piece of art supports something as small as single pansy, to sunflowers. 
And this glass float has a hook for a weight to be attached so it will stay put in your pond where you want it. With a light weight, or no weight, your fish will have fun moving it around. Get them one for Christmas! The hook can also be used to hang the glass sphere from a tree or where ever else you want to add shiny color to cheer up the winter.
Contact the artist, Robert Coleman at ipunty@yahoo.com, or 740-393-4336.
Perfect, but cheap gloves: Gardeners tend to be frugal, not fancy. For less than $10, your gardener will be thankful for gloves that feel good, protect fingers from thorns, and still are flexible enough to let you feel and find the weeds that needs to be pulled fingers! Many brands and colors available, even tie-dye.
Gift cards gardeners will actually use and love you for:
Sharpening On Site- mobile sharpening service www.sharpeningonsite.com
Garden Stores- You can usually purchase online and have them shipped to you or your givee.
I’ll keep adding to this post, so come back!