Celtic Slainte Travel Artwork Mug. Celtic Attic created this cool artwork travel mug. Slainte Knot work Art. Created with knot work inside a bubble and superimposed over more celtic knot work. Slainte roughly translated means “cheers”. Keep beverages hot or cold for hours with our ultra-insulated stainless steel tumbler, perfect for commuting, camping, tailgating, hiking, travel and more!