Amazon.com : 300PCS Sticky Index Tabs, Transparent Sticky Page Markers Notes, Book Markers, Sticky Note Tabs, Sticky Tabs, Page Tabs, Label Stickers, Small Pop Up Index Tabs, Post Tabs Flags Stickers :
Amazon.com : 960Pcs Transparent Sticky Note Pads Set,Clear Sticky Notes Long Page Markers Sticky Index Tabs, Arrow Flag Tabs Colored Sticky Notes for Page Marker Bookmarks,Sticks Securely, Removes Cleanly(Clear) : Office Products
Xrhyy 5 Color Reusable Divider Sticky Notes Index Tabs, 20pcs Per Color - Memo Pad - AliExpress