I hate the kiddie interiors. I've been editing pudge's by giving bright coloured furniture (NOT KIDDIE) like the simple set, patchwork set, and tons of house plants to balance out the eye-searing colours.
I ususally give Stitches brightly colored stuff like the Astro and Spooky series or the elephant slide, candy machine,popcorn machine,toy capsule thingy,juicy apple tv....stuff like that or any toy-like furniture.
The jack-in-the-box item from Halloween matches his house perfectly. I have sent him that plus a piggy bank and a customized boxed figurine from the fireworks shows in August. If you don't have access to these unorderable items then the kiddie set is the way to go, as well as any toys.