Mr. Boddington's Studio Grandparent + Grandchild Pen Pal Kit at Air Supply Mr. Boddington's Studio Grandparent + Grandchild Pen Pal Kit at Air Supply Grandparent + Grandchild Pen Pal Kit Mr. Boddington's Studio Grandparent + Grandchild Pen Pal Kit at Air Supply Mr. Boddington's Studio Grandparent + Grandchild Pen Pal Kit at Air Supply. Everything needed to delightfully correspond between generations. (Can be used by either the grandparent or grandchild!) Box includes: four back and forth correspondence flat cards, four unique letterhead sheets, eight envelopes.