Un-mounted Rubber Stamps are just that, no wood, or cushion, just the rubber pattern/picture itself, and are so easy to use.
Why spend money each time on a block of wood you don't need that then takes up so much space in your crafting area, making storage a problem?!
Un-mounted rubber stamps just need a flat surface that is slightly larger than the rubber stamp itself.
Alternatively, the picture side of an existing wooden rubber stamp could be ideal. Again, make sure it is just larger than the un-mounted stamp that you want to use.
Use water soluble glue, such as Pritt Stick, to glue your un-mounted stamp to the flat surface.
Then stamp your image, pressing firmly, but not hard, and don't "rock" the stamp! For larger stamps it is often useful to have a cutting mat or such like under the card you are stamping, so that there is a little bit of give, to give a clearer image.Once you have finished, peel off the un-mounted stamp from the surface you've used, and clean the glue off the stamp and the mount, with a wet wipe. Leave to dry, and then store.