Can a Macbook send out wifi?

I’ve got a device that requires the WEP setting on wifi. However, I’m moving soon and won’t be using my own wifi router, and won’t be able to change the settings.

Is there a way that I could connect to the local router wifi from my laptop, and then send out a WEP wifi signal from MY computer, for the device to connect to?

I wasn’t sure if there might be a gadget I could buy, or maybe by some miracle there could be a program I could use.

Thanks!