I picked up a few of these Flexible Gooseneck Adapters mainly to use as a simple and flexible way of positioning a microphone at my desk while i'm doing screen recording tutorials on my computer. These Gooseneck type Adapters can also be used on top of light stands to adjust something like an LED Light to hang over head when doing product photography.
While these 10" Light Stand Adapters are labeled as flexible, they do take some force to bend over. This is probably not ideal for very lightweight use, but is perfect if you plan to work with heavier equipment. What I love about them is the 1/4" thread mounted at the tip which is very standard to mount accessories (can be adapted to 3/8"), and also that you can stack them together (chain up) for a longer flexible arm.
When you combine these Flexible Light Stand Adapters with a Super Clamp and Pin (as found here), you can get a lot more use out of by clamping to tables, chairs, poles, tree branches, fences, etc. I was lucky to grab a few at $8 bucks, but I think it's still a good deal finding these Flexible Stand Adapters for around $10-$13 dollars.
Super Clamps with Removable Light Stand Pin