Here is a list of useful alt codes to use on habbo. alt + the following on the numpad.
0145 - Lock (Black)
0131 - Heart (Black)
0132 - Diamond
0133 - Spade (From Pack of Cards)
0134 - Bomb
0135 - Do Not Sign ( Circle with cross through it)
0124 - Heart (White)
0170 - Skull
0171 - Two Arrows Pointing Left (<<)
0172 - Fish (and Bubbles)
0174 - ®
0176 - ° (Degrees Sign)
0177 - Phone
0178 - Steam (or Airwaves)
0181 - Cup of Hot Tea With Saucer and Steam (what a way to go!)
0182 - Light Bulb (On)
0185 - Squiggle (Swirl)
0186 - Lightning
0187 - Some Sort of Lamp? (find out on habbo!)
0190 - Lock (White)
0165 - Star
0169 - ©
Enjoy!
