The group today really enjoyed creating patterns with the beads and lining them up on the boughs. Some are pleased with minimal beading, and others were not done until the tree looked like a rainbow of color!
I have found that preschoolers have attention spans that reflect their age. If they are four years old, you can engage them and hold their interests for about 4 minutes. You get one more minute for every year they are older. So a lot of the crafts and activities I do with the kids are broken up and placed between other activities, so I can hold their attention longer. So even though they had already made a "tree" earlier in the day, they were not opposed to creating a geometric tree because it utilized different materials and skills.