When fitting a Kitchen it is a good idea to fit a splash back between the wall and floor cupboards, this normally only needs to be heat resistant behind the cooker.
Tiles are often used for a splash back and can look very well if done properly, stainless steel is very popular for behind a cooker also. If there is no risk of heat you can use wood or even acrylic sheet! This kitchen has a beech effect splash back and a tiled splash back behind the cooker. The beech effect wood is simply cut to size and held in place with panel adhesive.
This unusual tile splashback is behind a gas hob, please see here for instructions on how to tile a kitchen splashback-
Acrylic can be used for a kitchen splashback as long as it is not used behind a cooker or behind a hob as it is flammable, for instructions on how to cut and fit an acrylic splashback please see here-
Stainless steel is a popular choice for a splashback behind a cooker because it is very resistant to heat. It's best if you buy the piece of stainless steel cut to the correct size as it's difficult to cut cleanly unless you have a guillotine. Fixing a splashback like this is very easy and can be accomplished by using a good quality grab adhesive. It's important to screw a batten to the wall below the splashback to hold it until the adhesive has hardened