I did something similar when I purchased the QS8's. I left them in the boxes under the coffee table for a few weeks. She never noticed them until one day she had to move the coffee table to vacuum. When I got home that night she asked me what they are, my response was "I picked them up when I got the VP150" Not true, but it worked at least I think...

M80's VP150 QS8's Earthquake SuperNova MKV-15
Integra DTR-7.4 Outlaw 755 Outlaw M200's Outlaw ICBM