Out of interest, how big is it?
I've never cooked it but I see no reason you couldn't add it at the end of a stir fry. I often grate & press the water out of it then mix it with yoghurt, cumin & salt as a raita. Also there's lots of simple recipes for' refrigerator pickles' online: just vinegar, water, salt, sugar & herbs & spices. Put in jars & store in the fridge for 4 or 5 days. One tip, adding something high in tannins helps to maintain crunchiness, blackcurrant or vine leaves that sort of thing

Great tip for keeping your pickles crunchy Darren! Thanks :)

I had a stir fry in a Thai restaurant only yesterday that had cucumber in it. I would never have thought to do that myself but it seemed like a good idea, especially if you have a glut!

I'm going to Google Thai cucumber stir fry very soon, four healthy plants was way too much for one person!!
Cukes in my favourite Ken Dodd joke - What a lovely day to poke a cucumber through the vicar's letterbox & shout 'The aliens are coming, the aliens are coming!'