While garters made on an Inkle or a ridged heddle loom can be quite decorative and fancy, like all woven fabrics there will be little stretch.
Knitted Garters however stretch very nicely and are very comfortable on the leg. You can wear them all day and not notice them. And they will be less likely to cut off circulation.
Knitted Garters are also very easy to make yourself. A lot less expense than purchasing or making a loom. All you need are two sticks and some yarn. You can knit almost anywhere.
You can look up about a thousand youtube videos on how to knit. You will need to learn to cast the stitches onto the needles - How to knit the garter stitch - and how to cast off when you have reached the length you want.
I'm not much of a hand knitter but I can knit a pair of garters in about a day.
And if you do choose to knit your own garters it will amaze you how relaxing and enjoyable knitting can be. Soon you will want to try knitting your own kilt hose.
There is an entire Ravelry group dedicated to nothing but knit kilt hose. - https://www.ravelry.com/groups/kilt-hose-and-flashes
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