Do not - not applicable, though I do try to reduce water use during dry periods especially.

Have ice cream as dessert occasionally?

Do, though not nearly as often as I used to.

Leave internet tabs/pages open as a reminder to follow up on them later? (Nooo, not guilty of this at allll.... )

Do not. Instead, I tend to leave notes on my computer.

Read a book before bed?

Do. Always.

Use cloth/resuable bags when shopping?

Do & it is slowly becoming compulsory.

Spend too much on groceries?

Do - but not too often.

Go into the supermarket for 2 items and stagger to the checkout with your arms full?

Do, altho I'm usually using a cart.

Doze off in church?

Do not. Unless I collapse unconscious from necktie-suffocation.

Stare at an animal just to see which of you blinks first?

Do, or did. If I gaze into a cat's eyes long enough I might want to adopt him/her.

Keep calm as much as possible when driving?

Do. Except with tailgaters.

Still write hand-written notes to family/friends sometimes?

Do not. I can barely read my own handwriting these days.

Get someone else to make shopping lists before I fetch the groceries?

Do, sort of. The other members of the household are supposed to add things we are out of to the shopping list, but they don't always do it and then tell me "we're out of (fill in the blank)" after I get back from shopping. (sigh!)

Ride bike?

Do, but not in the last two years while away from my usual home.

Sit up in bed and drink tea or coffee?

Do not. Though I do usually have a glass of water nearby to sip when necessary.

Watch a partial lunar eclipse from out of one's own bedroom window?

Do, if possible, depending on whether the moon can be seen from my window at the time. If so, YES!

Read books aloud to yourself (if only in a hushed whisper?)