Related על ביצה 4:3

If a bed, a chair, a bench, an armchair, or a cot breaks to pieces, likewise if a beam breaks, likewise if a stack of beams breaks, one is not allowed to take care of oneself with them on the holiday, because they are not "what is already available". But if one did eat her on the holiday, one is not allowed to heat with them on public holidays. Nuts or almonds themselves, one can heat with them, because they are not "what is already available".