Here's a Form Control cluster that I use instead of a ComboBox, especialy if the number of selections offered is a mere 3 or 4. It also works better than a triple-state CheckBox or OptionButton too.

One CommandButton and two TextBoxes, a short and a long.

When focus lands on the CommanButton. I use repeated presses of the SpaceBar to loop through the options which are clearly displayed. Fortunately Focus stays on the ComandButton after each SpaceBar press. until "Tab" navigates off the Button to the next control in the order for mouse-free  operation. Box TextBoxes are locked and not in the tab order.

Only the TextBox displaying the numeric value "x_optionNumber" is bound to the underlying table (a Long Integer field). I use a Select Case block on the button's ONCLICK to effect the loop that replaces the "pre-code" value of [x_optionNumber] with its incremented or loop-back value. There is no value list. Instead the longer TextBox's DataSource is. . .

   "=Switch (x_optionNumber=0, "EE-NIE", x_optionNumber=0, "ME-NIE", x_optionNumber=0, "MY-NIE")

I find that it's fast, lightweight and with an economy of code making it simple to edit, resistant to bugs and quite stable to use.