Not quite as many as some of you but I passed a helium filled pink dolphin over Snowden at 5500ft today, same level as me and about 100ft away.
Shocked me so much I nearly spilled my drink! Not a good thing to do in a cr@ppy PA28!
My passenger (on her first flight) didnt bat an eye lid!
Cant help thinking "Hmmm, string wrapped in prop, mountainous terrian below a thick layer of cloud, options....nil!"
Tested the old sphincter muscle I can tell you!
Cheers
TBL