Ikea's Lack tables are very versatile and there is a lot you can do with them. In my case, I put one upside-down table and on it, another Lack table.
I searched online for a connector but I had a requirement to not use screws (because I didn't want any). Hence, I designed this connector.
This connector connects the two tables' legs to create an ever-lasting stability.
I printed the .gcode file attached using Creality Ender 3 V2 Neo.
The author marked this model as their own original creation.