Autumn Pyjamas

I actually need Autumn pyjamas more than I need Autumn clothes. I also need relaxed gym clothes.
I therefore have a cunning plan which is to make yoga pants, leggings, knit tops etc in various fabrics and wear the loud ones as nightwear and the more 'normal' ones to the gym. I can try some new patterns as wearable muslins which become PJs. I am particularly interested in slim pants and leggings in PJs as I think they would be less prone to creawl up the legs, flap about and be cold. I am cold at night so need long sleeves and long legs in things, none of this cami top nonsense, I am also planning on making the rainbow psychadelic cat fleece fabric into a dressing gown (aka robe).

Aren't they jolly? And of course if there is any left over..... I foresee hat, scarf, fleece booties and all other manner of hideous fleece-age. I can't wait and of course will be super toasty this winter if I do so :-)