i am really in love with such things,that's why i'm posting this code here,cause i was searching for it for a long time.And message in lj is the easiest way to find everything you need.
That's why:
alt + 1 = ☺
alt + 2 = ☻
alt + 3 = ♥
alt + 4 = ♦
alt + 5 = ♣
alt + 6 = ♠
alt + 7 = •
alt + 8 = ◘
alt + 9 = ○
alt + 10 = ◙
alt + 11 = ♂
alt + 12 = ♀
alt + 13 = ♪
alt + 14 = ♫
alt + 15 = ☼
alt + 16 = ►
alt + 17 = ◄
alt + 18 = ↕
alt + 19 = ‼
alt + 20 = ¶
alt + 21 = §
alt + 22 = ▬
alt + 23 = ↨
alt + 24 = ↑
alt + 25 = ↓
alt + 26 = →
alt + 27 = ←
alt + 28 = ∟
alt + 29 = ↔
alt + 30 = ▲
alt + 31 = ▼
alt + 0134 = †
alt + 177 = ▒
alt + 987 = █
alt + 0169 = ©
alt + 0174 = ®
alt + 0153 = ™
alt + 0154 = š
alt + 0254 = þ
alt + 7896 = ╪
alt + 02225= ±
alt + 0135= Њ
alt + 0138= Љ
alt + 0137= ‰
alt + 0136= €
alt + 0135= ‡