Preparation

Blank book or albumFlowers and plantsScissorsTapePens or markersPaper

Set your guest book near pots or vases of flowers and plants. Tip: Choose varieties that have a single layer of petals, which makes them good for preserving. Provide scissors and tape.Write and display a note inviting revelers to clip a bud, tape it to a page, and write a message next to their pick. Ask a friend to do the first page so that next-in-line loved ones will get the gist. By the end of the night, you’ll end up with a keepsake that’s blooming with love.

Art Plus Black Page album, $35, shop.moleskine.com. 3M Scotch Expressions washi tape, from $2/roll, officesupply.com.