If you're interested in using a JavaCard-based smartcard with KeePassNFC but don't want to mess about with obtaining a smartcard and suitable reader, then I can sell you one of mine at cost price, which is £5.40 plus postage, pre-loaded with KeePassNFC and NDEF apps. Send me an email if you're interested.
These are NXP J3A040 contactless cards, running JavaCard 2.2.2 and GlobalPlatform 2.1.1. I'll install the KeePassNFC applet and an open source NDEF applet with appropriate configuration. NDEF is important because it means that Android can be configured to automatically start KeePassNFC when the card is presented.