alternative warm up/down due to privacy issues

hey guys,im having some trouble regarding the warm up/downs,because in my current house and situation warming towels,or using hot water in bath is kind of undo able due to privacy restrictions,so i would like to know from you guys,are there any alternative warming methods?,given that the objective is preparing the ligaments,etc,would edging be an option?,anyways,thanks you for your opinion

i never warm up or warm down, no problems here. but of course i don't recommend doing that.

but what you could do is the rice sock trick. put some rice in a sock tie it up at the end with a peice of string or something and put it in the microwave for about 1min then wrap it around your penis tightly.

could bed fowfers work too?