ACH payments with Stripe - Accept bank payments with a few lines of code.
Gemnote - Handwritten cards & premium custom gifts for companies
Wirize - Payment checkout for freelancers
iwantdis - Tastefully curated products and gifts from the internet
Giftbit Payment API - Stripe for gift cards
Handwrytten - Handwritten notes straight from your device. Huge selection of cards or design your own. Handwriting service integrates with 1000's of apps.