Para hacer estos signos primero debes dejar el alt sostenido y poner el numero y soltar , Bueno aqui les dejo del 1 al 300 los signos :
Alt + 1 =☺
Alt + 2=☻
Alt + 3= ♥
alt + 4= ♦
alt + 5= ♣
alt + 6= ♠
alt + 7=
alt + 8= ◘
alt + 9= ○
alt + 10= ◙
alt + 11= ♂
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+27 =←
ALT+28 =∟
ALT+29 =↔
ALT+30 =▲
ALT+31 =▼
ALT+27 =←
ALT+28 =∟
ALT+29 =↔
ALT+30 =▲
ALT+31= ▼
ALT+33= !
ALT+34= "
ALT+35= #
ALT+36= $
ALT+37= â
ALT+38 =&
ALT+39= '
ALT+40= (
ALT+41= )
ALT+42= *
ALT+43 = +
ALT+44 = ,
ALT+45 =-
ALT+46= .
ALT+47= /
ALT+48= 0
ALT+49= 1
ALT+50= 2
ALT+51= 3
ALT+52= 4
ALT+53= 5
ALT+54= 6
ALT+55= 7
ALT+56= 8
ALT+57= 9
ALT+58= :
ALT+59= ;
ALT+60= <
ALT+61= =
ALT+62 = >
ALT+63 = ?
ALT+64= @
ALT+65= A
ALT+66= B
ALT+67= C
ALT+68= D
ALT+69= E
ALT+70= F
ALT+71= G
ALT+72= H
ALT+73= I
ALT+74= J
ALT+75= K
ALT+76= L
ALT+77= M
ALT+78= N
ALT+79= O
ALT+80= P
ALT+81= Q
ALT+82= R
ALT+83= S
ALT+84= T
ALT+85= U
ALT+86= V
ALT+87= W
ALT+88= X
ALT+89= Y
ALT+90= Z
ALT+91= [
ALT+92=
ALT+93= ]
ALT+94= ^
ALT+95= _
ALT+96= `
ALT+97= a
ALT+98= b
ALT+99= c
ALT+100= d
ALT+101= e
ALT+102= f
ALT+103= g
ALT+104= h
ALT+105= i
ALT+106= j
ALT+107= k
ALT+108= l
ALT+109= m
ALT+110= n
ALT+111= o
ALT+112= p
ALT+113= q
ALT+114= r
ALT+115= s
ALT+116= t
ALT+117= u
ALT+118= v
ALT+119= w
ALT+120= x
ALT+122= y
ALT+123= z
ALT+124=
ALT+125= }
ALT+126= ~
ALT+127= ⌂
ALT+128= Ç
ALT+129= ü
ALT+130= é
ALT+131= â
ALT+132= ä
ALT+133= à
ALT+134= å
ALT+135= ç
ALT+136= ê
ALT+137= ë
ALT+138= è
ALT+139= ï
ALT+140= î
ALT+141= ì
ALT+142= Ä
ALT+143= Å
ALT+144= É
ALT+145= æ
ALT+146= Æ
ALT+147= ô
ALT+148= ö
ALT+149= ò
ALT+150= û
ALT+151= ù
ALT+152= ÿ
ALT+153= Ö
ALT+154= Ü
ALT+155= ø
ALT+156= £
ALT+157= Ø
ALT+158= ×
ALT+159=
ALT+160= á
ALT+161= í
ALT+162= ó
ALT+163= ú
ALT+164= ñ
ALT+165= Ñ
ALT+166= ª
ALT+167= º
ALT+168= ¿
ALT+169= ®
ALT+170= ¬
ALT+171= ½
ALT+172= ¼
ALT+173= ¡
ALT+174= «
ALT+175= »
ALT+176= ░
ALT+177= ▒
ALT+178= ▓
ALT+179= │
ALT+180= ┤
ALT+181= Á
ALT+182= Â
ALT+183= À
ALT+184= ©
ALT+185= ╣
ALT+186= ║
ALT+187= ╗
ALT+188 = ╝
ALT+189 =¢
ALT+190 =¥
ALT+191 =┐
ALT+192 =└
ALT+193?= ┴
ALT+194= ┬
ALT+195 =├
ALT+196 =─
ALT+197 =┼
ALT+198 =ã
ALT+199= Ã
ALT+200= ╚
ALT+201= ╔
ALT+202= ╩
ALT+203= ╦
ALT+204= ╠
ALT+205= ═
ALT+206= ╬
ALT+207= ▲
ALT+208= ð
ALT+209= Ð
ALT+210= Ê
ALT+211= Ë
ALT+212= È
ALT+213= ı
ALT+214= Í
ALT+215= Î
ALT+216= Ï
ALT+217= é
ALT+218= ï
ALT+219= █
ALT+220= ▄
ALT+221= ¦
ALT+222= Ì
ALT+223 =▀
ALT+224 =Ó
ALT+225 =ß
ALT+226 =Ô
ALT+227 =Ò
ALT+228 ='
ALT+229 =Õ
ALT+230 =µ
ALT+231 =þ
ALT+232 =Þ
ALT+233 =Ú
ALT+234 =Û
ALT+235 =Ù
ALT+236 =ý
ALT+237 =J
ALT+238 =¯
ALT+239 ='
ALT+240= ≡
ALT+241= ±
ALT+242= ‗
ALT+243= ¾
ALT+244= ¶
ALT+245= §
ALT+246= ÷
ALT+247= ¸
ALT+248= À
ALT+249= "
ALT+250= ·
ALT+251= ¹
ALT+252= ³
ALT+253= ²
ALT+254 =■
ALT+255= (hace un espacio)
ALT + 256 = (no hace nada)
ALT+257= ↕
ALT+258= ←
ALT+259= ♥
ALT+260= ♦
ALT+261= ♣
ALT+262= ♠
ALT+263=
ALT+264= ◘
ALT+265= ○
ALT+266= ◙
ALT+267= ♂
ALT+268= ⌂
ALT+269= ♪
ALT+270= ♫
ALT+271= ☼
ALT+272= ►
ALT+273= ◄
ALT+274== ↕
ALT+275== ‼
ALT+276== ¶
ALT+277== §
ALT+278== ▬
ALT+279== ↨
ALT+280== ↑
ALT+281= ↓
ALT+282= →
ALT+283= ←
ALT+284= ∟
ALT+285= ↔
ALT+286= ▲
ALT+287= ▼
ALT + 288 = (hace un espacio)
ALT+289= !
ALT+290= "
ALT+291= #
ALT+292= $
ALT+293= %
ALT+294= &
ALT+295= '
ALT+296= (
ALT+297= ½
ALT+298= *
ALT+299= +
ALT+300= ,0