Assemble legos, work on a project vehicle, watch paint dry, or pretty much any normal activity instead of a ball game.
If you ever need legos and know what parts you want, or sets, go to www.bricklink.com.
You can get whatever you want there through thousands of different shops.
Yeah. Wanna come over to my house Sunday afternoon? We can do something more entertaining, like, dig a big hole in my back yard, then stand there drinking beer and staring into it silently.