I like to fill in the bare spots left behind with annuals. Some of these self sow for the next year also. You could go with a groundcover, like Vinca that weaves around the bulbs. Or plant perennials that will come up later and hide the dying foliage. You have many options, all of which work well and look beautiful.

Jen

I plant my bulbs around peonies, daylilies and other perennials that bush out and hide them. Also, I have a lot of Narcissus 'Hawera', which has slender, grass-like foliage that disappears quickly. It's an exceptionally beautiful daff, small and multi-flowered with a clear yellow bloom.