Kit with plurality of blocks for constructing craft

A kit for constructing a craft, comprising:

• a plurality of blocks, each block having a main body having an exterior surface that is made from a material that is adherent when exposed to water so as to permit a first block from the plurality of blocks to be adherable to a second block of the plurality of blocks by applying water to at least one of the first and second blocks,
• each block further including a top surface and a block projection extending from the top surface,
• each block further including a bottom aperture extending into the main body towards the top surface, and defining a longitudinal axis,
• wherein the bottom aperture includes a first aperture region that is shaped to receive the block projection of the second block of the plurality of blocks, and
• wherein the bottom aperture includes a second aperture region that is shaped to receive a distal portion of a block tray projection on a block tray,
• wherein the first aperture region is shaped to receive a proximal portion of the block tray projection,
• wherein the bottom aperture includes a shoulder between the first aperture region and the second aperture region that defines a depth of the first aperture region, wherein the depth of the first aperture region is selected such that the shoulder is positioned to engage a limit surface on the block tray to hold a lowermost surface of one of the plurality of blocks above a floor of the block tray that surrounds the block tray projection.

A kit for constructing a craft, comprising:

• a plurality of blocks, each block having a main body having an exterior surface that is made from a material that is adherent when exposed to water so as to permit a first block from the plurality of blocks to be adherable to a second block of the plurality of blocks by applying water to at least one of the first and second blocks,
• each block further including a top surface and a block projection extending from the top surface,
• each block further including a bottom aperture extending into the main body towards the top surface, and defining a longitudinal axis,
• wherein the bottom aperture includes a first aperture region that is shaped to receive the block projection of the second block of the plurality of blocks, and
• wherein the bottom aperture includes a second aperture region that is shaped to receive a distal portion of a block tray projection on a block tray,
• wherein the first aperture region is shaped to receive a proximal portion of the block tray projection,
• wherein the first aperture region is sized to have a first minimum clearance relative to the proximal portion of the block tray projection, and the second aperture region is sized to have a second minimum clearance relative to the distal portion of the block tray projection, wherein the first minimum clearance is smaller than the second minimum clearance.