Want to know what's more fun than watching paint dry??
Squeezing paint out of tubes!
Not my own idea, I borrowed it from another artist's blog, wanting to try it for myself. The reason is to have handy several shades of acrylic paint at your palette knife tips, without the hassle of opening & closing lids which ofttimes are stuck. The sectional has mointened felt fastened inside lid and it is stored in your fridge whereby it may keep up to 2 months or more.
Another realization: no matter how icky the lid gets on a tube of Liquitex brand acrylic, they are always easy to open!