Sorry to hear! I’ve got a friend at work that uses a portable crock pot to warm up food every day. Maybe something like this could work for you? https://www.amazon.com/Crock-Pot-Lunch-Crock-Food-Warmer/dp/B006H5V8US/ref=asc_df_B006H5V8US/?tag=hyprod-20&linkCode=df0&hvadid=167141308073&hvpos=&hvnetw=g&hvrand=1907138117270409640&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9003664&hvtargid=pla-275333816341&psc=1