I use daisies most of the time...
My favorite presentation is a daisy or two in individual small glass bottles that I have saved up. Some are antiques, some are new, all are odd shapes and sizes.
My idea for you is to drill a hole in your silver block that will hold a florists water pick(1/2" or a bit bigger) and insert a daisy stem or two in the water pick. You could use a curly ribbon bow/pom-pom to disguise the top of the pick. HTH

Here is a link that might be useful: water picks

Jaybird thanks for the advice. I checked out the link, and the water picks are very reasonably priced. During my searches, I found that a lot of weddings are using wheatgrass with flowers inserted in the wheatgrass. The photos are gorgeous, and I've been thinking about that too. I need to purchase some seed and try it first to see how long it takes to grow the wheatgrass. Still trying to decide what to do. It's a little over a month away. Thanks again.

Ring, if you have to go the most "economical" route, I recently did some simple funeral reception centerpieces using a single flower. I used tulips but you could substitute daisies.

DD

Those photos are lovely with the yellow tulip centerpieces. Thanks for posting them. I called the florist today, and she said she will definitely have fresh daisies...so that's a good thing. Another lady is making navy tablecloths, and I have the supplies for the silver boxes and name tags, so things are progressing. Thanks again.