Arrrgh to Z ... Genius... A set of set of 28 alphabet wall decals is a good place to start!. At last a fun set of kooky characters created with kids in mind opposed to what adults think kids should like!  Available in 3 sizes.
Small: approx 600 mm x 400 mm or 23.62'' x 15.74"(all together on a backing paper sheet). One sticker 85mm x 97mm. £40.00
Medium: approx 900 mm x 600 mm or 35.43'' x 23.62" (all together on a backing paper sheet). One sticker 125 mm x 145 mm. £60
Large: 1273 mm x 840mm or 50.11'' x 33.07"(all together on a backing paper sheet). One sticker 175 mm x 205 mm. £80
 

Unlike regular vinyl, our patented self-adhesive fabric paper is PVC free.
Removable and repositionable. Matt with slight fabric texture. Comes as pre cut decals on a backing paper, just peel & stick. • Will not leave any residue on your wall once removed. • Tear resistant. • Will stick to any non-porous surface, including walls, ceilings, windows, furniture. • Can be applied over any existing wall paper, as long as the surface is smooth.