If you check on the Activity Connection website which I believe is activityconnection.com they have ideas for volunteer recognition with a puzzle theme. You do have to be a member to access the site however.

Here's a few of the ideas from the site.

Give all of your volunteers a jigsaw puzzle as a gift. Wrap the puzzle and add a note that says, "We're a perfect fit!"
Take pictures of all of your volunteers. Glue the pictures to heavy poster board and cut into puzzle pieces. Put all of the pieces in a colorful envelope and present as a special gift.
Take an empty puzzle box and fill it with some goodies - such as tea bags, bath salts, wrapped cookies, chocolate bars, etc. Put a note on the outside that says, "Here are some things we 'pieced' together just for you."
See our Crafter's Cove page and make "Puzzling Picture Frames" for all of your volunteers. This is a project your residents can do.
They also have a cute card and certificate with a puzzle theme on the site.

This is so awesome thank you so much!

According to me silk flowers are the best item for decoration & gifting. Because they are last longer, they just need little maintenance. You should also clean these flowers time to time to alive their realistic look...

faux plants and flowers | silk centerpieces

With the technology of "fresh touch" artificial flower stems it is now possible to have an artificial flower arrangement that is identical to fresh flowers. The benefit of artificial over fresh is that even the freshest of fresh will only last a week before wilting.
There has been several articles written recently on how acceptable fake flowers have become.
For exclusive arrangements maybe check these people out.

Demmerys . Orchids