If you are asked to buy 2 things out of these, which ones would these be and why?
1. PolyUrea Spray
2. Healing Cloths
3. Non-Newtonian Fluid
4. Thermo-Chromic Paint
5. Super Glue
6. Lava
7. Glittering Ink
8. Bio-elastic Display
9. Fire- Extinguisher Ball
10. Gradient-Index Glass
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