These pavers can be made with 1×2’s.
1×2’s tend to have more of a square edge opposed to 2×2’s or larger members.
For larger pavers the depth should probably be increased another ¼” if not more and a wire mesh laid 1/3 from the bottom. For this purpose and other similar jobs wire coat hangers would work and allow closets to purge.
Fasten 2 wood screws through the long 1×2’s and into each end of the short members to avoid twisting. These screws will prove handy when screwed and unscrewed for repetitive productions.
Place the form over plastic sheathing on top of a flat surface when the good side is to be the bottom. The end result will be a very smooth surface but if desired, creasing the plastic a bit prior to pouring the ready mix concrete will give a texture to the pavers.
Tiles face down work well as an accent.
Interestingly, not so delicate leaves with nice pronounced veins can be used for imprint.
Place leaves on top of the plastic with veins looking up and then gently pour concrete over them to make the pavers. When dry the leaves will peal and leftovers will weather.
Magnolia, fig and persimmon among some of the plants all around us have leaves with strong veins. Rhubarb leaves being so large could be used in bigger pavers.
When the good side of the pavers is up and after smoothening, one could embed pebbles, river rocks, tiles or even some marbles with a gentle pounding of the trowel’s handle.
Embed the marbles sufficiently into the pavers not to be hazardous when walking. Marbles can provide wonderful sparkles of light and color.
The clear colored marbles will capture the light the best because their clear glass will make it appear as if the light comes from way down deep within the pavers.
These catchers of light work very well at night and delineate path even if the light source is not directly there. When used at the edges of a pathway the marbles can be embedded down to a hair above their equator to catch the most light and anchor to the concrete.
Of course safety and location should always be in mind when placing these marbles.
Finally, after placing the pavers sprinkle sand in between the cracks and resort to the aid of a broom. Hose down with a gentle mist and repeat the sand application.
Down the road another application of sand might be needed.
The following is a great, complete and helpful site for marbles.
and through the kindness of Mathews Library the following video explains how to make pavers in a slightly different way.