Lightbulb siluetti 11 months 1 Energy-saving-lamp siluetti 11 months 2 Stickman siluetti 11 months 0 Stickman siluetti 11 months 0 Chess siluetti 12 months 5 Chess siluetti 12 months 2 Chess siluetti 12 months 1 Chess siluetti 12 months 4 Chess siluetti 12 months 0 Stickman siluetti 12 months 0 Thinking siluetti 12 months 0 Unknown siluetti 12 months 3 Brainstorm siluetti about 1 year 16 Chess siluetti about 1 year 0 Chess siluetti about 1 year 0 Chess siluetti about 1 year 0 Chess siluetti about 1 year 1 Chess Pieces Brain siluetti about 1 year 1 Mental health siluetti about 1 year 2 Men siluetti about 1 year 3 Speech bubbles siluetti about 1 year 1 Speech siluetti about 1 year 1 Thoughts siluetti about 1 year 9 Thinking cap siluetti about 1 year 0 Puzzle Mind siluetti about 1 year 10 Cranium siluetti about 1 year 3 Think siluetti about 1 year 9 Question mark siluetti about 1 year 2 Question siluetti about 1 year 5 Art siluetti about 1 year 2 Art Deco Style Question Mark Prismatic siluetti about 1 year 0 Dreamscape Question Mark siluetti about 1 year 0 Question siluetti about 1 year 1 Bear has a question siluetti about 1 year 1 (Trevor) Medical Doctor Man siluetti about 1 year 4 Strength siluetti about 1 year 1 Businessman is Thinking siluetti about 1 year 0 Human siluetti about 1 year 8 Brain siluetti about 1 year 1 Brain siluetti about 1 year 1