Don't spend a lot of money on gifts. Make them special with handmade touches like a handwritten note or a photo frame decorated with their favorite memories.
If you don't have the crafting skills, give them supplies like new scrapbook paper or gardening seeds.
Make the presentation of the gift as special as the gift itself. Put it in a basket with tissue paper or foam pieces to make it look beautiful.
The most important thing about gift-giving is the thought and care you put into it. Spend less on the price tag and more on the personal touches.