Protech have been producing Action Figure stands for a number of years now, mainly for the 3.75" Star Wars figures - both Vintage and Modern.
Interestingly their Vintage figure stand does have an application in larger scale figures as it works with a selection of Star Wars Black Series 6" figures as well as fitting the peg holes used on the Diamond Select 7" figures.
At just 2" across, this clear perspex stand is a little less intrusive than the larger NECA version.
The stands work simply enough by using a peg on the stand that fits into one foot of the figure. The figure still needs to provide the stability in the waist and hips, but with the foot locked in position it does give the figure a more stable base.
These stands are bought in bulk, with a minimum pack of 20 and up to packs of 100 if you wish. On the current prices, these stands will be setting you back about £0.75 each