As long as I can do what I'm into, I am hardly ever bored. There is always something to read IRL or online, or a video /board/ card game to play, or even just something interesting to think about or daydream about. So having nothing to do is not a problem at all, off into my head I go!
Extremely rarely I have an off day when nothing tempts me, everything is just meh, but that really is extremely rare.
The only thing that bores me out of my mind is when I'm stuck doing something I find boring (like when I was in school that was math, or writing or reading something uninteresting). As long as I can avoid that, I am far from easily bored. Boring things still make my brain go to sleep. For instance, lexicon language and reading rules for games will make me yawn immediately.
I can be very easily entertained. My mother recently took some medication. It was a pill she put in a glass of water, and waited for it dissolve. the pill would move about and start "jumping" up on the sides of the glass as it reacted with the water. I watched in fascination every time. I didn't tire of it.