Members of the public have come up with hundreds of ideas to help Singapore Airlines (SIA) generate much-needed revenue during the Covid-19 pandemic, such as using grounded planes to screen movies or hold matchmaking sessions. The fees charged could vary depending on whether customers are in economy, business or first class.The ideas are being put forward in a bid to avert a proposal that SIA is reportedly considering: Starting “flights to nowhere”, where passengers fly out of Singapore and…