Small, high windows; shade trees; wide overhangs and .

Thermal chimneys and plenums are good too, but I don’t know how you’d demonstrate them with a shoebox.

Window tinting is simply making the glass of a window darker to limit the sunlight that passes through it.
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If you want to be really technical.
Access your city’s climate data website. Find out what direction ‘cool’ Summer breezes travel in most frequently, during your analysed period.
You can then open the part of your house which harnesses this wind, and cools the entire shoebox passively.
This opening, can be represented as Bifold doors.
Goodluck, especially with the stats.
Not sure if its relatable with ur project.. but in a real situation, its a gd alternative to the others listed.
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What is the aim of your experiment? maybe try asking the other ppl in your class
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Joty