A few days ago I asked if a €9 cordless Ikea drill could make drainage holes. It went well. The drill bit was €13. More details in comments. : r/succulents
TLEEP SAE 3.94" Long 10 Pcs 1/4" Hex Head Allen Wrench Drill Bits, 5/64" to 5/16" Hex Key Drill Bit Set Magnetic Tips Screwdriver Socket Bit Set for Ikea Type Furniture(S2 Steel),