The vet hospital I worked for would send out cards and make a donation in the animals name to a wildlife rescue..
By the way..you can stop by the vets to say hi....maybe bring them some homemade brownies.....
We had clients that we got very attached to and were pleased when they came by.....(just NOT on a busy Saturday). Most people that work at vets are animal lovers (it sure isn't for the pay) and we all know people that love animals are the BEST....Rainbow Bridge does make you cry but also gives comfort. I believe there is a bridge where we will meet again....all creatures big and small...are loved