Most of the time I don't care if they play with my scarves, but sometimes they get a little dirty being drug all over the floor (yeah, yeah. I should clean more often). After I spotted this tutorial on Hi Sugarplum, I thought it'd be perfect if they had their own scarves.
I let the boys pick out their own fleece patterns, and bought just 9 inches (one quarter yard) of each of four patterns. I think the the total was about $6.50.
They LOVE their new scarves. Since we've made them they've taken them with them everywhere--even to bed at night (not around their necks, of course. They won't strangle themselves in the night).
One tip about the scarves. The fleece I bought was on 60 inch (5 ft) bolts, so obviously it makes a 60 inch scarf. I think it's a little short for an adult--although perfect for kids. I measured a nearly identical fleece scarf I have from Old Navy, and it's actually 6 ft long. I'd consider buying 2 yards (6ft) of fleece and cutting them the opposite way if you are going to make scarves for adults. Of course that means you'll have 6 scarves of the same pattern, which if you're making them for gifts is not necessarily a bad thing.
Did all that make sense? I'll illustrate.