Apple - How can I copy videos and photos to my iPad without syncing?

In iTunes, go to the iPad’s (or iPod’s) summary screen. Check the “Manually manage videos” box, and click the “Apply” button. You can then drag videos from your desktop to the iPad without having to sync.

DropBox on your main machine would allow you to add both files to your iPad without sync. The iPad should automatically play files it recognizes in the proper application when it sees them there. Dropbox provides 2GB of storage for free so going above that will require payment.

Edit You can 'star' files if you want them downloaded to the device so you'll have them even if offline.

Airdrop via Finder on Yosemite works well for me. Surprisingly fast.