i'm looking for manga that got something similar with Ichigeki Sacchu!! Hoihoi-san emphasis on the smallish size character living in a normal world or/and untalkative-non living being-character...... and also on the cuteness i guess ^____^ another example for this are Orichalcum Reycal and Oh! Mini Goddesses...but the characters are not as cute as hoihoi-san
edit: oops.... can any mod change the title into "something similar with hoihoi-san" pleaze... i'm sorry.. my vocab failed me yet again T__T
Ai wa Noroi no Nihon Ningyou - Ecchi a lot but still a cursed doll, later another doll joins the fun.
Omamori no Kamisama - A lil god who protects the main girl...though he becomes big he's 90-95% in tiny form.
Seems to be the only one I can remember here at 6am over here XD
Oh, now I remember why I wanted to reply on this message. HoiHoi-san was great...sadly it only had a one-shot volume. BUT luckily people loved it so much that they started it again after it got lots of merchandise, so now we just need someone who would want to start scanlating hoihoi-san again.
PS: I could REALLY need a Hoihoi-san over here (7-8 days left in hell...)
Edit: had to change the name after remembering the right title.
@T1: thanks for the recomendation.. i just finished reading project doll-phone (loled at the ending... "this phone is under a curse...." ^__^) and ai wa noroi no nihon ningyou (look promising, but....well we'll see) as for omamori no kamisama... i'm sorry, but i must drop it.... i'm just not expecting a manga where a huge minotaur demon suddenly show up 0_0'...