Mailing a printed invitation is more courteous and practical than shouting birthday-shindig details into friends’ ears or skywriting invites to an intimate dinner party. Proclaim your plans gracefully with today’s Groupon: for $25, you get $50 worth of stationery, greeting cards, and more from Erin Condren, redeemable online.

Helmed by a friendly, dedicated artist, the online emporium of personalized products bursts with a bevy of colorful invitations, stationery, address labels, and more. Employing whimsically unpredictable color combos and customized lettering, the crafty creator fashions distinctive items for a dizzying array of occasions, from informal birthday parties to elegant parrot weddings. Karaoke-inclined hosts can prepare guests for crooned versions of "Old MacDonald" with popstar invitations ($3 each; minimum order of 25). Apple note pads make fruit an omnipresent grocery-list item ($30 for four), and the brightly shaded personalized growth chart ($75) plots the progress of your child's or pet goldfish’s vertical climb up to 7 feet. Aspiring card architects can upload their own family photos or poorly scanned tax returns onto a 12-pack of colorful classic photo cards ($38).