Look what I bought today!

I bought these in our local Sainsbury's today and as I was paying for them a lady looked at me kindly and smiling said "Aah, how lovely - for your grandchildren?" Absolutely not I riposted! These are for my boat, Quasar, in order to scare away the seagulls that are determined to make a nest in my boat cover.  I ask you, some people! It was perfectly obvious to me.. ha! ha! (I didn't really say it like that - honest).  The other day, a friend suggested I try something that moved, blew around in the wind etc. just to keep the pesky blighters off..  We'll see, going to try it this weekend...  Ps - the extra photos are of one of the pesky blighters "nesting" on my canopy!