There are a lot of this, so it'll be very difficult to suggest before knowing what you've already watched. I'll just mention someloli66 wrote:
I want some ecchi, already finish airing, and slice of life
Ecchi: Kanokon, To Luve Ru (technically finished airing but there's OVA coming out if I'm not wrong), Seikon no Qwaser, Icchiban Ushiro no Daimaou, etc
Slice of Life: Usagi Drop (a must watch), Aria The Animation, Ano Mita Hana no Namae....., Clannad, Houro Musuko, Nichijou, Nichibro etc
Be aware that I'm just suggesting these based on your requested genre, there maybe some that you don't like (like Houror Musuko) but try to watch it first