Holi

The myth following Holi, reveals that a fiend named Holika together with her brother, an atheist king by the name of Hiranyakasyapu conspired ways to kill his son Pralhad because Pralhad was an ardent devotee of Lord Vishnu. But their attempts always failed for Lord Vishnu protects those who love him. Finally, Holika who having received a blessing from Lord Bramha to be immune to fire, jumped in with Pralhad. But Brahma's blessing could only be used for good purposes and so Holika was consumed by the fire where as Pralhad was saved by the grace of the Gods. Thus, Holi is said to be celebrated to rejoice Holika's extermination and the traditional bonfires are believed to commemorate her death.
According to another story, from the Puranas and the Bhagvat, Kansa sent a female demon named Putna to kill his nephew Lord Krishna. Taking the form of a nurse Putna went to Brindaban where the child Lord Krishna was growing up and tried to feed Him her poisonous milk but the attempt backfired and she was killed. Her body was burnt on the night of Holi. So some consider Holi, the festival of fire also.
Holi for everyone is a time for fun and frolic. A day when one forgets the worldly anxieties and just enjoys the finer things in life.