I’ve been using a leather briefcase I picked up on deep discount at a Coach outlet (last year’s Connor model). Good for legal size paperwork, padded, holds charger and 10 ft of cat 5, headphones. Still pricey/larger when compared to other items I’ve seen discussed in this forum.
A couple times I’ve mistakenly put the TR in there while not standing by and wow did it come out really hot. The last time I could have sworn there was the faintest acrid smell (but maybe I was hallucinating in panic).
So far luckily no damage.