2-6 hours seems likely. Playing a games for my let's plays often takes 1-2 hours, writing a post maybe around an hour(?). I also read posts and make comments on hive, watch a lot of anime reactions/ let's plays of my favorite games.
The amount of times I've used it? Maybe thrice in 6 months.
Few years ago I bought rubber expander. I only used it a handfull of times.