Flexible but ideally within the next week if possible

I'm looking to create a series of simple 3D models that can then be printed. I'll be using them as formers for some work. It's basically a domed cylinder. The dome on top of the cylinder should be less than a full half sphere if that makes sense. I'll be looking to 3D print it off in a series of diameters and heights. Doesn't matter what the inside is like, I'll be forming my work over the outside of each former. I'm also thinking it would be good if the flat base is designed with an indent so that additional sections can be stacked below it to increase its height - so kinda like lego bricks. Simple cross section sketch's attached, can send you dimensions etc if this is something you'd be up for doing.

Many thanks,

Kyle