I wish I could give you some good ideas, I need some too! I just wanted to let you know you're not alone in this dilemma.
In my case, the ONLY thing that ever makes me get up is my kid. When he's not home there's nothing that motivates me except my bladder

I hope you get some good ideas so I can spy on your thread!
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Just for today, I will not sit on my couch and watch TV all day.
Instead I will move my TV into the bedroom.