During the 1970s–1980s she actively participated in ethnographic expeditions, folk festivals, hikes through important historical places in Lithuania.
Gražina Didelytė participated in around 30 expositions in Lithuania, Czechoslovakia (in 1977, 1983), Poland (in 1977), Latvia (in 1984–85), Finland (in 1993–94), Japan (in 1996).
She designed around 700 bookplates, also many art prints (etching cycles "Song about Tree" in 1970, "Lithuania of Svirskis" in 1975, "Oh, Homeland" in 1976, "In memoriam Vincas Mykolaitis-Putinas" in 1978, "Moments" in 1982, "The Rudnia Marsh" in 1991), fine graphics works, book illustrations (for the poetry books of Justinas Marcinkevičius, Kazys Bradūnas, Aldona Puišytė, Gintautas Iešmantas, Česlovas Masaitis, Algimantas Baltakis and others).
[1] During her stay in Rudnelė, she created a cycle dedicated to the local nature the Dainavos klodai ('The Dainava Stratum').
[3] Didelytė employs metaphoric style depicting inner human emotions, mythical, ethnographical motives, nature elements.