On a budget?
- take a trip to a dollar store
- buy childrens alphabet bricks e.g. A, B, C, .....Z
- buy some craft sticks
- hot glue a piece of the craft stick to opposite sides to stop the cable sliding off the block
- if your cables are heavy/stiff, then glue the block onto a 2" or 3" ceramic backsplash tile to stop it tipping over
Nice thing about this solution, being wood they are non conductive and non capacitive - zero ipact on the signal
If desired, add the foam strip as mentioned above or use a rubber band across the two craft stick uprights to support the cables
I decided to try these because I have man-made fiber broadloom on the floor and figured this may impact the capacitive effect of the overall cable performance - lifting them off the broadloom mitigates that problem.
Since I was not conviced it would have an impact I opted for a very affordable solution. They are still there and seem to do the trick.
People are "amused" at yet another crazy (but very affordable) solution
Regards - Steve