Used tooth brushes

Odd question but do you keep your child’s old tooth brushes as like a momento or keepsake from when they were small?

I’m only asking because I just threw away about 6 of my sons old tooth brushes that had somehow stayed in our bathroom for the past 6 years. All of a sudden I’m feeling a bit sad and regretful for throwing them away rather then keeping them as a keep sake haha. Someone please tell me I’m being crazy.