for tea: easy answer would be the Snob's Answer like teabag tea, but you can make enjoyable if uninteresting teabag tea if you need to
another easy but incorrect answer would be like teavanna style tea blends, which combine low quality loose leaf tea and aesthetic bits of ingredients with flavoring sprays to create very disappointing but much more expensive than teabags tea
the real answer is bad shou puer, which tastes like swamp and smells fishy and gross.
for sandwiches: when i was a kid my mom would always pack me a tuna sandwich for school but spending hours in a lunchbox with an ice pack always made the sandwich dense and wet with condensation. really unpleasant
