Anyone know of any ways to spend GSM credit, obviously apart from calls, data, & text?

Here is my list:

1. De Lijn - you can send an SMS to De Lijn to order a single ticket. You get back a code that you show to the driver as you board.

That’s it. My whole list.

I have credit that will expire soon, so I am in a use-it-or-lose it situation and I don’t need a bus ride.