sylvaetria:

Well, it’s not so much activation (as in the sense of sigils), as it is “charging” them, or programming them to help act towards your intent.

• Basic Charging / Casting Circle
• Charging 101: The Quick Basics
• Charging an Object
• Charging & Cleansing Crystals
• Charging and Dedicating Stones and Crystals
• Charging Board
• Charging Objects
• Enchanting Things with Touch
• Energy Clearing and Infusing
• Let’s Talk Basics: Directing Energy
• Magical Visualization – Some Basics
  
• Spell to Charge and Set Intention for an Object
  
• Using Your Intent
• Witch’s Guide to Charging
• Witch’s Guide to Programming

Depending on what you use them for, I say it’s not entirely *necessary* to do so, but it would add that extra bit of oomph to spells or rituals. 🙂