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Those soakable cloth neck-wraps work as a cheap personal cooler($5).
The Coolify2 works as an expensive personal cooler(~$200).
If you have a fridge, freeze 2 litre ice-cream containers filled with water to make large ice blocks. Then put the block in a tub to melt, and sit your feet on it to stay cool(budget-mode, $cost of tap water)
Here are some less mentioned FLOSS games, that are excellent quality:
Fillets-ng (2D fish sokoban)
The Dark Mod (3D stealth game, bow and sword)
Crrcsim (3D model glider flightsim, slope soaring)