oxygen mask with pipes that covers nose and mouth - 2 for 200
https://www.amazon.in/product-reviews/B08F2SPLV3
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stop insects entering inside room or house through the gap under the door bootom sealing strip or pad
https://www.amazon.in/dp/B09SBJJYYL
2 in 1 skate shoe walk and skate on same shoe - Rs.8000
https://liekick.com/ https://www.youtube.com/shorts/_VlZEp_PVRU?feature=share
all RO parts without container - cheap
https://www.amazon.in/AQUA-PURE-Complete-Service-Kit/dp/B0CGVL3PVV
convert hard water to soft water - no reduction in TDS
https://www.amazon.in/product-reviews/B01MUBU0YC shower head - 50k reviews - 1500- lasts for 6 months
for removing stains on tiles
https://www.amazon.in/Asian-Paints-SmartCare-Cleaner-Ceramic/dp/B0B8HGDWSQ