ShuaiGe-
Fun stuff.
I
used to use a Victoria's Secret bag to accomplish the same effect.
Some other fun things to keep on hand in your place are a tabletop book like
SuperSex by Tracey Cox, or a couple of sex board/card games (these should be a little less conspicuous, but still visible... e.g., stick them on the lower shelf of a glass-topped coffee table, where she'll notice them when she looks down).
All that is stuff you're not going to have on hand if it's just you or your buddies hanging out there. Girls see that stuff and know it means... more girls.
Chase