Now, I don't know about the rest of you, but although ample substitutes, Thai birthday cakes just don't hit the mark.
A friend recommended that we order a cake from The Little Baker, situated just around the corner from Soi 55/1 on Petchkasem Road (near the main traffic lights).
My son went down and ordered a cake to my exact specifications (chocolate, chocolate and a bit more chocolate

When my son collected it yesterday lunchtime, to protect the artwork from the heat, it was packed in a large polystyrene box, packed with ice.
I can't recommend this cake highly enough - it definitely hit the mark for the special occasion. We will use the shop again.