My modular sink dryer i am using for some time, mainly done for my girl. It has 10x10cm base plates, with connector, pins, and end pieces. You can connect as many as you like.

There are 2 end pieces and connector variants, one is regular that sits flush with base plate, and 1 is 2mm taller so you can somehow lock this dryer in place, using furniture in your kitchen.

There is also piece that you can mount to this dryer, and it holds cutlery.

Hope you like it 

If you think something would be great addition to this project, leave a comment or add some print profiles with new items

I uploaded fusion360 model so anyone can add something from themselves

PS. pins look better printed straight up, but hold much more load while printed sideways(ugly tho)