Backlog, what should I add next?

My BL store is now closed and I'm transferring products to this shop in groups. As checking prices and entering products take quite some time and I need to get stuff out of storage, I'll do that one category at a time. What should I add next?

What I have:

• Castle theme
• City theme
• Prince of Persia theme (complete)
• Star Wars theme (just a few sets)
• polybags
• magnet sets, keychains & bag charms
• books
• collectible minifigures