My favourite store in the world is Daiso.
Daiso is a Japanese chain of ¥100 stores (about $2.80 in AUD, apparently) which I adore due to all the obscenely cute shit they sell.
Let’s not be coy; I do adore most- if not all- dollar stores. Truthfully the really junky ones are often the most fun. The fascination is similar with opp-shops. What can I say? I love hoarding random shit that I have no logical use for under the vague pretence of sourcing costume supplies.