Never received such a kit. On our TT we did receive about $100 in gift cards for the store to buy our own. With the motorhome we just bought from the same dealer (3 times the cost), we got a gift basket. Had a table cloth, potato bag chip clip, ice cube maker thing, emergency blanket i think and a couple of other little things.
I do have a "kit" that Monaco gave my in laws when they bought their RV years ago. It's a cheap hoes with water regulator, toilet paper and a couple other little things. I keep it in a box in one of the storage bays for "just in case".