https://www.bnm.gov.my/index.php?ch=en_historical_background&pg=en_banknotes_issued
1 cent is out of circulation, which perhaps the copper clad bronze metal is worth more than MYR0.01
5 cents - can't buy anything but can serve for rounding up or down prices. For e.g the price of an item is say 99.93 (rounded up) 99.95.
10 cents - couple of nails from a hardware store.