Sticky notes are especially useful, as these are already uniform in size and usually come in several contrasting colors. Paperclips, tacks, and rubber bands are often colorful too, making them ideal substitutes for chips.
Play Online: While it might be one of the more obvious options of playing poker without physical chips, it still needs to be mentioned. Online poker is an excellent alternative to playing live poker. You can instantly jump into a game of virtually any stakes you want at any given moment even with play money.