which wireless connection should I buy?

I need to hook up a simple wireless connection between my laptop and my
robot. I'm on a tight budget, so economy is the key feature I'm looking
for. Range is not important (I'll never be standing more than a couple
meters away), and data rate isn't particularly important either (I'll be
sending very small amounts of data). Two-way communications isn't
necessary at this point; the robot needs to receive but doesn't need to
data.

Any recommendations?

Thanks,
- Joe

P.S. Merry Christmas!