Star Wars references are everywhere in Steven Spielberg films. Below is of the most obvious ones from Indiana Jones and the Temple of Doom.
From Yahoo UK: “For the second Indiana Jones adventure, Lucas and Spielberg were much more blatant with their product placement. The pre-credit sequence, which introduces love interest Willie Scott and villain Lao Che, all takes place in Shangai restaurant-cum-nightclub named… Club Obi-Wan. The Force is strong with this reference.”
Check out R2-D2 in Close Encounters of the Third Kind HERE
Both Droids can be found in Raiders of the Lost Ark – cool cameo, HERE