Can't pair Lutron Pico?

Not for that price--if you get a lot, you'll still come out ahead even with the cost of the Smart Bridge Pro. However, if you only need a few, the Hue Dimmer isn't bad, but it doesn't fit in a standard US decorator plate like a Pico, and some people have had problems with it falling off their network (probably better if you use a channel that is allowed by ZLL, but that's just a guess). The Eria Dimmer is cheaper than that and looks similar and does fit in a standard decorator plate, but I find them less usable because you have to hold a button for what seems like forever before it actually registers as such. I've also had batteries go bad faster than I'd expect in them considering they do nothing unless you press the button and don't even send battery reports.

The Aeon Minimotes were nice after I got them paired to Hubitat (not easily possible in the early days, but better now). However, they look nothing like a switch and don't support released events (so "dim while holding"-type automations aren't possible). You may wish to take a look at this list and see if anything else looks appealing to you: Hubitat Elevation supported button controller capabilities matrix