ᐅ How can I reinforce Malm nightstands to support more weight?

Hello everyone, I have a fairly specific issue: I own the IKEA Malm bedside tables, and I would like to increase their load capacity in my apartment without worrying that they might sag or even break over time. Specifically, I’m looking for the best ways to reinforce these bedside tables so they can support heavier items, such as heavy lamps, stacks of books, or electronic devices. It is important to me that the appearance is preserved as much as possible and that the reinforcement is not too complicated. What proven methods or materials can you recommend to effectively improve the stability of these bedside tables? Thanks in advance!