Join Date: May 2000
Location: Houston, TX, USA
Programs: UA Platinum, AA Lifetime Platinum, DL Platinum, Honors Diamond, Bonvoy Ambassador, Hertz Platinum
Posts: 8,179
I staple mine into my passport, in one stack that I re-staple when I get another one. This prevents the suspicion of something else being hidden, and keeps the official record of my travel with the passport.