For Mother's Day Amazon has their Echo line on sale.
Get the 2nd Generation Echo for $65, 35% off retail of $99:
Or get the 2nd Gen Echo Plus with Philips Smart bulb for $119, 27% off:
Save even more as they still have their trade-in program, where you get get another 25% off.
I traded in a 2nd gen Dot which gave me an extra $35 off the Plus, making it $85.(+tax)
Also although it has already been posted, just a reminder that the 3rd Gen Echo Dot is still on sale for $29.99 (40% off) or 3 for $69.97 ($23.33 each):