Stand for Ikea TILLGANG tray. Helps to keep vertical position of the tray and collect water drops after washing.
Link to cad:
https://cad.onshape.com/documents/9d729d9f4f10f1f5e60c6158/w/7efe2aa7e01f5abb154dbefc/e/d9dbb4ac34f172bbb6b2d3bb
The author marked this model as their own original creation.