Acrylic splashbacks are often cut to size, and many people choose to continue the splashback over a larger area so it acts as an upstand too. Look for a fire rated acrylic, since normal plastic shouldn’t be used in close proximity to your hob. Alternatively, you could cover the acrylic with a transparent piece of glass. A cheap alternative to glass, with a similar visual effect. Usually cut to measure, so you can choose the exact size and shape you want. Acrylic also repels dust better than glass or stainless steel, it is light and easy to install as well as being easy to clean and not prone to smudges and marks.