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Stickers come in countless shapes, colors, sizes, and styles. You can find decorative washi tape in almost any color and design. The possibilities here are endless! Arrange the stickers in a way to create a picture, or place them sporadically across the envelope. It's also okay to keep it simple and only use 1 or 2 stickers in one of the corners. Add 3D or foam stickers for more visual interest and texture. Make stripes or frames with the washi tape for a sleek look. Try placing a sticker at the point on the flap to create a seal and secure the envelope, or line the entire flap with washi tape. Paper punches range from basic shapes like circles and ovals, to more complex designs like flowers and scalloped circles. Punch basic shapes out of patterned paper and glue the paper shapes on the envelope. Create 3D flowers by layering the flower shapes on top of one another. Using a few basic shapes like circles and ovals, you can make anything from fish and frogs to bears and owls. If your recipient has a favorite animal, try making it, but any cute animal is sure to make them smile. For example, to create a ladybug: Punch out one large black circle and one small black circle. Use a glue stick or craft tape to adhere the small circle to the top of the large circle. This creates the body and head. To make the wings, punch out a large red circle and draw black dots on it. Then cut the red circle in half. Position the wings so they appear to be open, and adhere them to the large black circle, just underneath the "head." To make movable wings, use a small brad to attach the red half-circles. This is a great idea if you are giving the recipient money or a gift card. Use ribbon in any color or design. The ribbon can be thin or thick, and you can even use multiple kinds at the same time. Instead of tying the ribbon around the envelope, try making a bow out of the ribbon and gluing it on the envelope. Glue blingy fake diamonds or pearls on the envelope. Place them sporadically, or use them to create swirly lines or other designs. This would be a fun option for a girly-girl or someone who loves jewelry. For added texture and visual interest, try gluing buttons on the envelope.

Summary:
Apply stickers or washi tape to the envelope for a quick and easy option. Create fun shapes and designs with a paper punch. Combine multiple paper punch shapes to make animal art. Tie ribbon around the envelope to make it look like a gift box. Add jewels or buttons for something extra.