I do Amazon Mechanical Turk for some side cash. I'm looking for some more online or mobile app side cash suggestions.
I do surveys pretty much. The lowest payment is a penny but you can get twenty bucks or so if you know how to transcribe. I follow https://www.reddit.com/r/HITsWorthTurkingFor/ for easy hits that can give me a decent payout. It plies up over time, you can also search for available hits on your own that are not mentioned on the HITS subreddit but there's a chance you might do a really long survey for little cash. It depends. I have a total of 213 dollars earned throughout four years but I haven't been too dedicated. You can transfer payments to your Amazon payments at any time and then you can transfer payments to your bank. The minimum amount to transfer to your bank is a dollar.
Play guitar and/or ukulele and sing. I take requests when I know the tune. I find that having a varied repertoire helps a lot with busking, I'm usually able to find a song that would appeal to whatever demographic is keen on giving me money. A No Diggity/Thriftshop mashup has bought me more than one six pack.