I bought the Mrs a cupholder from Librands. It sits under the seat permanently. On the odd occasions she brings a hot drink out with her, she prefers to hold it in her hands and/or spill it down her front.
"Y mae dafad ddu ym mhob praidd" 1972 4/4, 1981 MGBGT, 1984 FLHT1340, 1980 XLH1000, 1990 ZX10