Need Suggestions on Using and Earning Flipkart Supercoins

Hello everyone, I needed more suggestions on how you all earn supercoins or use them effectively. It would be of great help, if you share details on: 
1. How do you earn supercoins in Flipkart? (best way as per you) 

2. How do you spend them? (best way as per you) 

I have been reading on the same and here are some of the ways to earn Supercoins that I have found: 

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For earning Supercoins: 

1. Play Games (Take part in Leaderboards, etc FK also rewards a certain number of SC for the top SC earners of the day in Games)

2. Do recharge and Bill Payments
3. Complete challenges (Don't think Flipkart provides many of them these days) 

4. Use FK Axis Bank Super Elite Card (2 supercoins per 100rs outside FK and extra 12 supercoins per 100rs on FK) for non-plus, its 6 supercoins per 100rs)

5. Level Up (to Level 11th) to unlock 100 super coin rewards (one-time benefit probably)

6. Keep an  eye out on extra offers (for example, recently FK was offering 50 supercoins reward for a women's day offer to women)

For spending Supercoins 

1. Spend on buying select Gift Cards with discounts

2. Use them while shopping 

3. Use them to avail different offers on OTT and subscriptions etc 

4. Use them on Cleartrip for extra discounts and make more out of your supercoins value 

5. Use them for Play and Win games (on risk*) 

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If you have any more suggestions to add, please do so. It would be of great help. 

Thanks to anyone who takes out the time to write:))