I'm looking for a cheap stroller for my mum to bring the little one for downstairs walks or to run errands nearby the house. Any recommendation? Preferably light and easy to open and close. Where to find them?

It depends on how old is your LO now. If your LO is still below 6 months, I wouldn't suggest the umbrella strollers and you might want to try out brands like Capella or Combi which produces light weight strollers which can give your child neck and head support.