Which other bank account(s) and alternatives with good returns would you recommend for me to "park" my excess money?

Can't say that current high yielding bank accounts apart from the ones you already have will beat inflation. Cimb's fast saver and citibank's maxi gain are often mentioned here and worth taking a look. For investments wise, perhaps you can look into buying into a basket of s-reits for a start, especially those with strong sponsors like mapletree. Or look to invest via robo advisory services. All the best

U can do short term FD, there are a number of promotions on going from cimb/boc/maybank. Check them out