What is 'Kar ha'Gamal'?
Rashi, Targum Onkelos and Targum Yonasan: A saddle-cloth or a cushion that one places underneath the camel's saddle. 1
Rashbam: It is the cushion or the blanket that one places on the camel, on which one sits.
Alternatively, based on the Gemara in Eruvin, it means the saddle itself.
When Lavan searched Rachel's tent, why didn't the Terafim say "we are here"?
Hadar Zekenim (19): If one considers himself an idol, it is a disgrace to be under someone's rump.
Riva: They speak only after they are worshipped.
Tosfos ha'Shalem (3): Rachel pressed tightly on them, lest they scream.